{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Quy t\u1eafc n\u1eafm tay ph\u1ea3i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a:","select":["A. nam ch\u00e2m th\u1eb3ng.","B. \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.","C. m\u1ed9t d\u00e2y d\u1eabn c\u00f3 h\u00ecnh d\u1ea1ng b\u1ea5t k\u00ec c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.","D. d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua."],"hint":"","explain":"<span class='basic_left'>Quy t\u1eafc n\u1eafm tay ph\u1ea3i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3211},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Quy t\u1eafc b\u00e0n tay tr\u00e1i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c:","select":["A. l\u1ef1c \u0111i\u1ec7n t\u1eeb.","B. l\u1ef1c \u0111\u00e0n h\u1ed3i.","C. l\u1ef1c t\u1eeb.","D. l\u1ef1c ma s\u00e1t."],"hint":"","explain":"<span class='basic_left'>Quy t\u1eafc b\u00e0n tay tr\u00e1i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":3212},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Ch\u1ecdn ph\u00e1t bi\u1ec3u \u0111\u00fang?","select":["A. Quy t\u1eafc b\u00e0n tay ph\u1ea3i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.","B. Quy t\u1eafc n\u1eafm tay ph\u1ea3i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.","C. Chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb ph\u1ee5 thu\u1ed9c v\u00e0o chi\u1ec1u d\u00e0i c\u1ee7a cu\u1ed9n d\u00e2y.","D. \u0110\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua l\u00e0 nh\u1eefng \u0111\u01b0\u1eddng th\u1eb3ng."],"hint":"","explain":"<span class='basic_left'>Quy t\u1eafc n\u1eafm tay ph\u1ea3i d\u00f9ng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb c\u1ee7a \u1ed1ng d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3213},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"D\u00f9ng quy t\u1eafc b\u00e0n tay tr\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c g\u00ec?","select":["A. L\u1ef1c \u0111\u00e0n h\u1ed3i","B. Tr\u1ecdng l\u1ef1c","C. L\u1ef1c ma s\u00e1t","D. L\u1ef1c \u0111i\u1ec7n t\u1eeb"],"hint":"","explain":"<span class='basic_left'>D\u00f9ng quy t\u1eafc quy t\u1eafc b\u00e0n tay tr\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":3214},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/5.jpg'\/><\/center>M\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng AB \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf g\u1ea7n \u0111\u1ea7u M c\u1ee7a m\u1ed9t cu\u1ed9n d\u00e2y c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua nh\u01b0 h\u00ecnh 30.1. Khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua d\u00e2y d\u1eabn AB theo chi\u1ec1u t\u1eeb A \u0111\u1ebfn B th\u00ec l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean AB c\u00f3:","select":["A. Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u t\u1eeb d\u01b0\u1edbi l\u00ean tr\u00ean.","B. Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi.","C. Ph\u01b0\u01a1ng song song v\u1edbi tr\u1ee5c cu\u1ed9n d\u00e2y, chi\u1ec1u h\u01b0\u1edbng ra xa \u0111\u1ea7u M c\u1ee7a cu\u1ed9n d\u00e2y.","D. Ph\u01b0\u01a1ng song song v\u1edbi tr\u1ee5c c\u1ee7a cu\u1ed9n d\u00e2y, chi\u1ec1u h\u01b0\u1edbng t\u1edbi \u0111\u1ea7u M c\u1ee7a cu\u1ed9n d\u00e2y."],"hint":"","explain":"<span class='basic_left'>Khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua d\u00e2y d\u1eabn AB theo chi\u1ec1u t\u1eeb A \u0111\u1ebfn B th\u00ec l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean AB c\u00f3:<br\/>Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi v\u00ec:<br\/>\u00c1p d\u1ee5ng quy t\u1eafc b\u00e0n tay ph\u1ea3i x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb trong l\u00f2ng \u1ed1ng d\u00e2y: c\u00f3 chi\u1ec1u t\u1eeb \u1ed1ng d\u00e2y \u0111i ra khung d\u00e2y<br\/>Sau \u0111\u00f3 \u00e1p d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c t\u1eeb t\u00e1c d\u1ee5ng l\u00ean khung d\u00e2y:<br\/>Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3215},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h2.jpg'\/><\/center>X\u00e1c \u0111\u1ecbnh ph\u01b0\u01a1ng v\u00e0 chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng v\u00e0o \u0111i\u1ec3m M tr\u00ean \u0111o\u1ea1n d\u00e2y d\u1eabn AB khi \u0111\u00f3ng c\u00f4ng t\u1eafc K tr\u00ean h\u00ecnh 30.8","select":["A. Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng, chi\u1ec1u t\u1eeb tr\u00ean xu\u1ed1ng d\u01b0\u1edbi.","B. Ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng chi\u1ec1u t\u1eeb d\u01b0\u1edbi l\u00ean tr\u00ean.","C. Ph\u01b0\u01a1ng n\u1eb1m ngang vu\u00f4ng g\u00f3c v\u1edbi AB, chi\u1ec1u t\u1eeb ngo\u00e0i v\u00e0o trong m\u1eb7t ph\u1eb3ng h\u00ecnh v\u1ebd.","D. Ph\u01b0\u01a1ng n\u1eb1m ngang vu\u00f4ng g\u00f3c v\u1edbi AB, chi\u1ec1u t\u1eeb trong ra ngo\u00e0i m\u1eb7t ph\u1eb3ng h\u00ecnh v\u1ebd."],"hint":"","explain":"<span class='basic_left'>\u00c1p d\u1ee5ng quy t\u1eafc n\u1eafm b\u00e0n tay ph\u1ea3i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a c\u1ea3m \u1ee9ng t\u1eeb.<br\/>Sau \u0111\u00f3 \u00e1p d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i x\u00e1c d\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c t\u1eeb.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":3216},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/7.jpg'\/><\/center>Tr\u00ean h\u00ecnh 30.6, \u1ed1ng d\u00e2y B s\u1ebd chuy\u1ec3n \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o khi \u0111\u00f3ng c\u00f4ng t\u1eafc K c\u1ee7a \u1ed1ng d\u00e2y A? V\u00ec sao? Bi\u1ebft \u1ed1ng d\u00e2y A \u0111\u01b0\u1ee3c gi\u1eef y\u00ean.","select":["A. \u1ed0ng d\u00e2y B s\u1ebd chuy\u1ec3n \u0111\u1ed9ng ra xa \u1ed1ng d\u00e2y A","B. \u1ed0ng d\u00e2y B s\u1ebd chuy\u1ec3n \u0111\u1ed9ng l\u1ea1i g\u1ea7n \u1ed1ng d\u00e2y A ","C. \u1ed0ng d\u00e2y B s\u1ebd chuy\u1ec3n \u0111\u1ed9ng l\u00fac ra xa,l\u00fac l\u1ea1i g\u1ea7n \u1ed1ng d\u00e2y A","D. \u1ed0ng d\u00e2y B s\u1ebd \u0111\u1ee9ng y\u00ean so v\u1edbi \u1ed1ng d\u00e2y A"],"hint":"","explain":"<span class='basic_left'>\u1ed0ng d\u00e2y B s\u1ebd chuy\u1ec3n \u0111\u1ed9ng ra xa \u1ed1ng d\u00e2y A v\u00ec hai \u1ed1ng d\u00e2y n\u00e0y \u0111\u1ea9y nhau.theo quy t\u1eafc n\u1eafm b\u00e0n tay ph\u1ea3i ta x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c l\u1ef1c t\u1eeb c\u1ee7a 2 \u1ed1ng d\u00e2y tr\u00ean ng\u01b0\u1ee3c chi\u1ec1u nhau n\u00ean \u0111\u1ea9y nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3217},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h4.jpg'\/><\/center>Khung d\u00e2y d\u1eabn ABCD \u0111\u01b0\u1ee3c m\u1ed1c v\u00e0o m\u1ed9t l\u1ef1c k\u1ebf nh\u1ea1y v\u00e0 \u0111\u01b0\u1ee3c \u0111\u1eb7t sao cho \u0111o\u1ea1n BC n\u1eb1m l\u1ecdt v\u00e0o kho\u1ea3ng gi\u1eefa hai c\u1ef1c c\u1ee7a m\u1ed9t nam ch\u00e2m h\u00ecnh ch\u1eef U (h\u00ecnh 30.3). S\u1ed1 ch\u1ec9 c\u1ee7a l\u1ef1c k\u1ebf s\u1ebd thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o khi cho d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua khung d\u00e2y theo chi\u1ec1u ABCD ? ","select":["A. S\u1ed1 ch\u1ec9 c\u1ee7a l\u1ef1c k\u1ebf s\u1ebd t\u0103ng.","B. S\u1ed1 ch\u1ec9 c\u1ee7a l\u1ef1c k\u1ebf s\u1ebd gi\u1ea3m.","C. S\u1ed1 ch\u1ec9 c\u1ee7a l\u1ef1c k\u1ebf s\u1ebd kh\u00f4ng thay \u0111\u1ed5i","D. \u0111\u00e1p \u00e1n kh\u00e1c"],"hint":"","explain":"<span class='basic_left'>Khung d\u00e2y d\u1eabn k\u00edn b\u1ecb l\u1ef1c t\u1eeb c\u0169a nam ch\u00e2m ch\u1eef U h\u00fat v\u00e0o l\u00f2ng nam ch\u00e2m n\u00ean ch\u1ec9 s\u1ed1 l\u1ef1c k\u1ebf t\u0103ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3218},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h5.jpg'\/><\/center>Treo m\u1ed9t thanh nam ch\u00e2m g\u1ea7n m\u1ed9t \u1ed1ng d\u00e2y nh\u01b0 h\u00ecnh 30.1. c\u00f3 hi\u00ean t\u01b0\u1ee3ng g\u00ec x\u1ea3y ra v\u1edbi thanh nam ch\u00e2m khi \u0111\u00f3ng kh\u00f3a K.(gi\u1ea3 s\u1eed \u1ed1ng d\u00e2y \u0111\u1ee9ng y\u00ean) ","select":["A. B\u1ecb h\u00fat l\u1ea1i g\u1ea7n","B. B\u1ecb \u0111\u1ea9y ra xa","C. Thanh s\u1eaft \u0111\u1ee9ng y\u00ean","D. \u0110\u00e1p \u00e1n kh\u00e1c"],"hint":"","explain":"<span class='basic_left'>Theo quy t\u1eafc n\u1eafm b\u00e0n tay ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u1ef1c ra c\u1ee7a \u1ed1ng d\u00e2y l\u00e0 c\u1ef1c nam n\u00ean \u0111\u1ea9y c\u1ef1c nam c\u1ee7a thanh nam ch\u00e2m ra xa.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3219},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h6.jpg'\/><\/center>M\u1ed9t nam ch\u00e2m h\u00ecnh ch\u1eef U v\u00e0 m\u1ed9t d\u00e2y d\u1eabn th\u1eb3ng \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed nh\u01b0 h\u00ecnh 30.4.a, b, c v\u00e0 d. D\u00f2ng \u0111i\u1ec7n trong d\u00e2y d\u1eabn c\u00f3 ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7p ph\u1eb3ng trang gi\u1ea5y, chi\u1ec1u \u0111i t\u1eeb ph\u00eda tr\u01b0\u1edbc ra ph\u00eda sau trang gi\u1ea5y.<br\/>H\u1ecfi tr\u01b0\u1eddng h\u1ee3p n\u00e0o l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng v\u00e0o d\u00e2y d\u1eabn h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng l\u00ean tr\u00ean.","select":["A. H\u00ecnh A","B. H\u00ecnh B","C. H\u00ecnh C","D. H\u00ecnh D"],"hint":"","explain":"<span class='basic_left'>\u00c1p d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i ta x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng v\u00e0o d\u00e2y d\u1eabn h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng l\u00ean tr\u00ean.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3220},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h7.jpg'\/><\/center>X\u00e1c \u0111\u1ecbnh h\u01b0\u1edbng c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua, \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng c\u1ee7a m\u1ed9t nam ch\u00e2m \u0111i\u1ec7n (h\u00ecnh 30.5). D\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua d\u00e2y d\u1eabn c\u00f3 ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng trang gi\u1ea5y, chi\u1ec1u \u0111i t\u1eeb ph\u00eda sau ra ph\u00eda tr\u01b0\u1edbc trang gi\u1ea5y","select":["A. H\u01b0\u1edbng l\u00ean tr\u00ean.","B. H\u01b0\u1edbng xu\u1ed1ng d\u01b0\u1edbi.","C. H\u01b0\u1edbng sang tr\u00e1i.","D. H\u01b0\u1edbng sang ph\u1ea3i."],"hint":"","explain":"<span class='basic_left'>V\u1eadn d\u1ee5ng quy t\u1eafc b\u00e0n tay ph\u1ea3i, x\u00e1c \u0111\u1ecbnh c\u00e1c t\u00ean c\u1ef1c c\u1ee7a nam ch\u00e2m \u0111i\u1ec7n, sau \u0111\u00f3 v\u1eadn d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb. K\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c l\u1ef1c t\u1eeb h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng xu\u1ed1ng d\u01b0\u1edbi. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3221},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h8.jpg'\/><\/center>M\u1ed9t khung d\u00e2y d\u1eabn h\u00ecnh ch\u1eef nh\u1eadt ABCD c\u00f3 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u ch\u1ea1y qua nh\u01b0 h\u00ecnh 30.7 \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng c\u1ee7a m\u1ed9t nam ch\u00e2m h\u00ecnh ch\u1eef U. L\u00fac \u0111\u1ea7u \u0111\u1eb7t khung \u1edf v\u1ecb tr\u00ed n\u00e0o th\u00ec khung kh\u00f4ng quay \u0111\u01b0\u1ee3c? V\u00ec sao?","select":["A. Th\u1eb3ng \u0111\u1ee9ng.","B. Nghi\u00eang 1 g\u00f3c 30 \u0111\u1ed9.","C. Nghi\u00eang 1 g\u00f3c 45 \u0111\u1ed9.","D. Nghi\u00eang 1 g\u00f3c 60 \u0111\u1ed9."],"hint":"","explain":"<span class='basic_left'>L\u00fac \u0111\u1ea7u \u0111\u1eb7t khung d\u00e2y th\u1eb3ng \u0111\u1ee9ng (c\u1ea1nh AB \u1edf tr\u00ean, c\u1ea1nh CD \u1edf d\u01b0\u1edbi) th\u00ec khung kh\u00f4ng quay \u0111\u01b0\u1ee3c v\u00ec g\u1eb7p l\u1ef1c t\u1eeb ${{F}_{1}}$, ${{F}_{2}}$ c\u00f3 t\u00e1c d\u1ee5ng trong l\u00fac n\u00e0y l\u00e0 l\u00e0m bi\u1ebfn d\u1ea1ng khung d\u00e2y ch\u1ee9 kh\u00f4ng l\u00e0m khung quay.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":3222},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"N\u1ebfu d\u00f9ng b\u00e0n tay ph\u1ea3i thay cho b\u00e0n tay tr\u00e1i v\u00e0 gi\u1eef nguy\u00ean c\u00e1c quy \u01b0\u1edbc v\u1ec1 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb th\u00ec chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb s\u1ebd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh nh\u01b0 th\u1ebf n\u00e0o?","select":["A. Gi\u1eef nguy\u00ean.","B. C\u00f9ng ph\u01b0\u01a1ng, ng\u01b0\u1ee3c chi\u1ec1u.","C. Ng\u01b0\u1ee3c ph\u01b0\u01a1ng, ng\u01b0\u1ee3c chi\u1ec1u.","D. Ng\u01b0\u1ee3c ph\u01b0\u01a1ng, c\u00f9ng "],"hint":"","explain":"<span class='basic_left'>N\u1ebfu d\u00f9ng b\u00e0n tay ph\u1ea3i thay cho b\u00e0n tay tr\u00e1i v\u00e0 gi\u1eefa nguy\u00ean c\u00e1c quy \u01b0\u1edbc v\u1ec1 chi\u1ec1u d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb th\u00ec chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb s\u1ebd x\u00e1c \u0111\u1ecbnh ng\u01b0\u1ee3c l\u1ea1i (c\u00f9ng ph\u01b0\u01a1ng nh\u01b0ng ng\u01b0\u1ee3c chi\u1ec1u).<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":3223},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h10.jpg'\/><\/center>M\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng AB \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf g\u1ea7n \u0111\u1ea7u c\u1ee7a thanh nam ch\u00e2m th\u1eb3ng (h\u00ecnh 30.2). H\u00e3y bi\u1ec3u di\u1ec5n l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean d\u00e2y d\u1eabn, bi\u1ebft r\u1eb1ng d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua d\u00e2y c\u00f3 chi\u1ec1u t\u1eeb B \u0111\u1ebfn A.","select":["A. C\u00f9ng chi\u1ec1u v\u1edbi d\u00f2ng \u0111i\u1ec7n.","B. Ng\u01b0\u1ee3c chi\u1ec1u v\u1edbi d\u00f2ng \u0111i\u1ec7n.","C. Vu\u00f4ng g\u00f3c v\u00e0 h\u01b0\u1edbng ra ngo\u00e0i.","D. Vu\u00f4ng g\u00f3c v\u00e0 h\u01b0\u1edbng v\u00e0o trong."],"hint":"","explain":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h10da.jpg'\/><\/center><span class='basic_left'>V\u1eadn d\u1ee5ng quy t\u1eafc b\u00e0n tay tr\u00e1i, l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean AB s\u1ebd c\u00f3 chi\u1ec1u nh\u01b0 bi\u1ec3u di\u1ec5n tr\u00ean h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":3224},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h11.jpg'\/><\/center>Treo thanh nam ch\u00e2m g\u1ea7n m\u1ed9t \u1ed1ng d\u00e2y. \u0110\u00f3ng m\u1ea1ch \u0111i\u1ec7n c\u00f3 hi\u1ec7n t\u01b0\u1ecdng g\u00ec x\u1ea3y ra v\u1edbi thanh nam ch\u00e2m?","select":["A. B\u1ecb h\u00fat l\u1ea1i g\u1ea7n","B. B\u1ecb \u0111\u1ea9y ra xa","C. Thanh s\u1eaft \u0111\u1ee9ng y\u00ean","D. \u0110\u00e1p \u00e1n kh\u00e1c"],"hint":"","explain":"<span class='basic_left'>Theo quy t\u1eafc n\u1eafm b\u00e0n tay ph\u1ea3i x\u00e1c \u0111\u1ecbnh c\u1ef1c ra c\u1ee7a \u1ed1ng d\u00e2y l\u00e0 c\u1ef1c b\u1eafc n\u00ean h\u00fat c\u1ef1c nam c\u1ee7a thanh nam ch\u00e2m l\u1ea1i g\u1ea7n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":3225},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h12.jpg'\/><\/center>Treo thanh nam ch\u00e2m g\u1ea7n m\u1ed9t \u1ed1ng d\u00e2y. \u0110\u00f3ng m\u1ea1ch \u0111i\u1ec7n \u0111\u1ed5i chi\u1ec1u d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua c\u00e1c v\u00f2ng d\u00e2y, hi\u1ec7n t\u01b0\u1ee3ng s\u1ebd x\u1ea3y ra nh\u01b0 th\u1ebf n\u00e0o?","select":["A. B\u1ecb h\u00fat l\u1ea1i g\u1ea7n","B. B\u1ecb \u0111\u1ea9y ra xa","C. Thanh s\u1eaft \u0111\u1ee9ng y\u00ean","D. L\u00fac \u0111\u1ea7u b\u1ecb \u0111\u1ea9y ra sau \u0111\u00f3 h\u00fat l\u1ea1i g\u1ea7n."],"hint":"","explain":"<span class='basic_left'>L\u00fac \u0111\u1ea7u nam ch\u00e2m b\u1ecb \u0111\u1ea9y ra xa, sau \u0111\u00f3 n\u00f3 xoay \u0111i v\u00e0 khi c\u1ef1c B\u1eafc c\u1ee7a nam ch\u00e2m h\u01b0\u1edbng v\u1ec1 ph\u00eda \u0111\u1ea7u B c\u1ee7a \u1ed1ng d\u00e2y th\u00ec nam ch\u00e2m b\u1ecb h\u00fat v\u00e0o \u1ed1ng d\u00e2y.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":3226},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h13.jpg'\/><\/center>X\u00e1c \u0111\u1ecbnh chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb, chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n, chi\u1ec1u \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb v\u00e0 t\u00ean t\u1eeb c\u1ef1c trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u00ean h\u00ecnh a, b, c. Cho bi\u1ebft k\u00ed hi\u1ec7u (+) ch\u1ec9 d\u00f2ng \u0111i\u1ec7n c\u00f3 ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng trang gi\u1ea5y v\u00e0 chi\u1ec1u \u0111i t\u1eeb ph\u00eda tr\u01b0\u1edbc ra ph\u00eda sau, k\u00ed hi\u1ec7u (\u2022) ch\u1ec9 d\u00f2ng \u0111i\u1ec7n c\u00f3 ph\u01b0\u01a1ng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng trang gi\u1ea5y v\u00e0 c\u00f3 chi\u1ec1u \u0111i t\u1eeb ph\u00eda sau ra ph\u00eda tr\u01b0\u1edbc.","select":["A. Sang ph\u1ea3i; chi\u1ec1u \u0111i t\u1eeb ph\u00eda sau ra ph\u00eda tr\u01b0\u1edbc; tr\u00e1i l\u00e0 c\u1ef1c B\u1eafc ph\u1ea3i l\u00e0 c\u1ef1c Nam.","B. Sang ph\u1ea3i; chi\u1ec1u \u0111i t\u1eeb ph\u00eda tr\u01b0\u1edbc ra ph\u00eda sau; tr\u00e1i l\u00e0 c\u1ef1c B\u1eafc ph\u1ea3i l\u00e0 c\u1ef1c Nam.","C. Sang tr\u00e1i; chi\u1ec1u \u0111i t\u1eeb ph\u00eda sau ra ph\u00eda tr\u01b0\u1edbc; tr\u00e1i l\u00e0 c\u1ef1c Nam ph\u1ea3i l\u00e0 c\u1ef1c B\u1eafc.","D. Sang tr\u00e1i; chi\u1ec1u \u0111i t\u1eeb ph\u00eda tr\u01b0\u1edbc ra ph\u00eda sau; tr\u00e1i l\u00e0 c\u1ef1c Nam ph\u1ea3i l\u00e0 c\u1ef1c B\u1eafc."],"hint":"","explain":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h13da.jpg'\/><\/center><span class='basic_left'>L\u1eddi gi\u1ea3i \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n nh\u01b0 tr\u00ean h\u00ecnh. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":3227},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"<center><img src='https://www.luyenthi123.com/file/luyenthi123/lop9/vatly/bai30/lv2/img\/h14.jpg'\/><\/center>Khung d\u00e2y d\u1eabn ABCD (c\u00f3 th\u1ec3 quay quanh tr\u1ee5c OO') c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng, chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 t\u00ean c\u00e1c c\u1ef1c c\u1ee7a nam ch\u00e2m \u0111\u00e3 ch\u1ec9 r\u00f5 tr\u00ean h\u00ecnh. X\u00e1c \u0111\u1ecbnh chi\u1ec1u quay c\u1ee7a khung d\u00e2y v\u00e0 d\u1ef1a v\u00e0o quy t\u1eafc n\u00e0o?","select":["A. Quy t\u1eafc n\u1eafm tay ph\u1ea3i. Chi\u1ec1u quay ng\u01b0\u1ee3c kim \u0111\u1ed3ng h\u1ed3.","B. Quy t\u1eafc b\u00e0n tay tr\u00e1i. Chi\u1ec1u quay ng\u01b0\u1ee3c kim \u0111\u1ed3ng h\u1ed3.","C. Quy t\u1eafc n\u1eafm tay ph\u1ea3i. Chi\u1ec1u quay c\u00f9ng chi\u1ec1u kim \u0111\u1ed3ng h\u1ed3.","D. Quy t\u1eafc b\u00e0n tay tr\u00e1i. Chi\u1ec1u quay c\u00f9ng chi\u1ec1u kim \u0111\u1ed3ng h\u1ed3."],"hint":"","explain":"<span class='basic_left'>X\u00e1c \u0111\u1ecbnh chi\u1ec1u quay c\u1ee7a khung d\u00e2y v\u00e0 d\u1ef1a v\u00e0o quy t\u1eafc b\u00e0n tay tr\u00e1i. V\u00e0 khung d\u00e2y quay ng\u01b0\u1ee3c kim \u0111\u1ed3ng h\u1ed3.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3228},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Mu\u1ed1n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u1eb7t t\u1ea1i m\u1ed9t \u0111i\u1ec3m trong t\u1eeb tr\u01b0\u1eddng th\u00ec c\u1ea7n ph\u1ea3i bi\u1ebft y\u1ebfu t\u1ed1 n\u00e0o?","select":["A. Chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n trong d\u00e2y d\u1eabn v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a d\u00e2y.","B. Chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.","C. Chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.","D. Chi\u1ec1u v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a d\u00f2ng \u0111i\u1ec7n, chi\u1ec1u v\u00e0 c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a l\u1ef1c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3."],"hint":"","explain":"<span class='basic_left'>Mu\u1ed1n x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c chi\u1ec1u c\u1ee7a l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t \u0111o\u1ea1n d\u00e2y d\u1eabn th\u1eb3ng c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u1eb7t t\u1ea1i m\u1ed9t \u0111i\u1ec3m trong t\u1eeb tr\u01b0\u1eddng th\u00ec c\u1ea7n ph\u1ea3i bi\u1ebft chi\u1ec1u c\u1ee7a d\u00f2ng \u0111i\u1ec7n v\u00e0 chi\u1ec1u c\u1ee7a \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb t\u1ea1i \u0111i\u1ec3m \u0111\u00f3.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":3229},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"M\u1ed9t khung d\u00e2y d\u1eabn h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua \u0111\u01b0\u1ee3c \u0111\u1eb7t trong t\u1eeb tr\u01b0\u1eddng gi\u1eefa hai nh\u00e1nh c\u1ee7a m\u1ed9t nam ch\u00e2m h\u00ecnh U. Khung d\u00e2y s\u1ebd quay \u0111\u1ebfn v\u1ecb tr\u00ed n\u00e0o th\u00ec d\u1eebng l\u1ea1i.","select":["A. M\u1eb7t khung d\u00e2y song song v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb","B. M\u1eb7t khung d\u00e2y vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.","C. M\u1eb7t khung d\u00e2y t\u1ea1o th\u00e0nh m\u1ed9t g\u00f3c ${45}^\\circ C$ v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb.","D. M\u1eb7t khung d\u00e2y t\u1ea1o th\u00e0nh m\u1ed9t g\u00f3c ${60}^\\circ C$ v\u1edbi \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb"],"hint":"","explain":"<span class='basic_left'>M\u1eb7t khung d\u00e2y vu\u00f4ng g\u00f3c v\u1edbi c\u00e1c \u0111\u01b0\u1eddng s\u1ee9c t\u1eeb, khi \u0111\u00f3 l\u1ef1c \u0111i\u1ec7n t\u1eeb t\u00e1c d\u1ee5ng l\u00ean khung d\u00e2y \u1edf hai b\u00ean s\u1ebd c\u00e2n b\u1eb1ng nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":3230}],"lesson":{"save":0,"level":2}}