Toán lớp 12 - Đề kiểm tra 15 phút - Toán lớp 12 - Tháng 10 - Số 2

{"save":1,"level":1,"time":"15","total":10,"point":5,"segment":[{"id":"78","test_id":"230","question":"<p>Cho s\u1ed1 ph\u1ee9c&nbsp;<span class=\"math-tex\">$z=5+6i$<\/span>&nbsp;c&oacute; ph\u1ea7n th\u1ef1c b\u1eb1ng:<\/p>","options":["-6","5","6","-5"],"correct":"2","answer":"<p><span class=\"math-tex\">$z=a+bi$<\/span><\/p><p>b l&agrave; ph\u1ea7n th\u1ef1c<\/p>","type":"choose","user_id":"108","test":"0","date":"2020-03-09 21:20:27"},{"id":"79","test_id":"230","question":"<p>Trong c&aacute;c m\u1ec7nh \u0111\u1ec1 sau, m\u1ec7nh \u0111\u1ec1 n&agrave;o <strong>sai<\/strong>?<\/p>","options":["&nbsp;M\u1ed7i s\u1ed1 th\u1ef1c a \u0111\u1ec1u \u0111\u01b0\u1ee3c coi l&agrave; m\u1ed9t s\u1ed1 ph\u1ee9c v\u1edbi ph\u1ea7n \u1ea3o b\u1eb1ng 0","S\u1ed1 ph\u1ee9c&nbsp;<span class=\"math-tex\">$z=a+bi$<\/span>&nbsp;g\u1ecdi l&agrave; s\u1ed1 \u1ea3o khi a = 0","S\u1ed1 0 kh&ocirc;ng ph\u1ea3i l&agrave; s\u1ed1 \u1ea3o&nbsp;","S\u1ed1&nbsp;<span class=\"math-tex\">$i$<\/span>&nbsp;g\u1ecdi l&agrave; \u0111\u01a1n v\u1ecb \u1ea3o"],"correct":"3","answer":"<p>S\u1ed1 0 v\u1eeba l&agrave; s\u1ed1 th\u1ef1c, v\u1eeba l&agrave; s\u1ed1 \u1ea3o<\/p>","type":"choose","user_id":"108","test":"0","date":"2020-03-09 21:26:10"}]}