A:
B:
C:
D:
举一反三
- 具有顺反异构体的物质是 ( ) 。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/9bf08e194cf24f80b9582238a48b2d98.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/6a33a313aebe4d5a8d8f6cd250361fec.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f7a33598bdb74c3180f03e2517cac29c.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d86d498d7c6b4594ad58fdbaad86028c.png" />
- 下列最稳定的自由基是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/7ff51d95af804e74bbffb2091d336668.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a7bc08ef90914e13a5f795670eb1e67b.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/6f85cd60c27645c39d58990b87615ebf.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/f5d0c506ba09424a838f7aee98e94e43.png" />
- 属于钙通道阻滞剂的药物是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3112081992ed47f8bf358bd9942d5ebb.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/17c349ff9e8e450c971ceb98947611f8.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4194526443744627b8a6fc1be47523d1.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/28cffdd18be74b33bc7d9efac912d8c3.png" />
- 阿糖胞苷的化学结构为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/588c9b478695464b9617893b2e1c303a.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/86b60f7b512f43a29c8431f882722d1b.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4546ccb30ea64350a626b0cd337e2c98.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/8f610edce6dd4a2e81ca814690e0b5ec.png" />
- 下列关系正确的有（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/0c9a6360c85f4ff9bdb2b17b576df2e0.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/09c3ca64214040d89eaa8534fa21d895.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3d88f37ec20c4604a8387c0e1088ad34.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/d48f61b369aa425384b1d565afb5d073.png" />
内容
- 0
以下属于二向应力状态的是（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e15f6476f10340b08e04f43932434268.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e15f6476f10340b08e04f43932434268.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e15f6476f10340b08e04f43932434268.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/e15f6476f10340b08e04f43932434268.png" />
- 1
下列化合物中，有顺反异构的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/4caea8e88bac45b48d41bb2b16eacd0d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/51411268d61c4efeb122a51094211c7c.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/3dc98c0e8e694c4a8c7b75033743aec1.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a2f358ca8faa4ba5904624989c0ca9b7.png" />
- 2
下列溶剂中极性最强的是 ( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/a257a09d18584b7d891be82974382a4d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/ff05f4fccc104533957a7f11b71fde6f.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/256725b392254c429c521b1f1d2740aa.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/b5dbd908ec2048eab29a32a26598fde3.png" />
- 3
下列函数表达中，（ ）是周期信号（ ） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/fa28c4df306a4768855eadcf32f77987.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/7a1a43bddcbc4b438f49428cef75ea64.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/5b67d7d31dd34862904bc3d9086668ed.jpg" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/377afdab17404edf84b525cd9e974df1.png" />
- 4
1,2-二甲基环己烷最稳定的构象是 ( )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/49aa785d0eb340dd92e5b4525437ea5f.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/20fea4e1e56944ff8b5ff56042861268.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/27f67e8546974152a175d512100b0dfb.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/344bb8d804474a3b91cf2e0c8bd17113.png" />