A:
B:
C:
D:
举一反三
- 下列化合物能形成分子内氢键的是 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/017aef1f5b214562b278a4b8e8384bc8.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/4afb87421d00455c9abbef7de2b4e84c.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/acc0e72b43be45d4ad8cabfc177f4ce3.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/8b72d0c501fa45609fc24fc005dc6957.png" />
- 与溴水反应生成白色沉淀的化合物是 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/74df21b424b1431d891b617f1a5da454.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/f40edc73e0b7408b84148abcef35e5b1.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/dc1eea010db347fd8e0f56f6aedd2c93.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/57c9f62d66204240bbbd72ec7efdb31a.png" />
- 可与硝酸银的氨溶液反应生成银镜的化合物是（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/6a4e97024646472bb00be0e30040fa7c.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/53a4027453494ea8bedecacc8f6bb12e.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/e0e31fd6b42c4587a95d288fc45a80cc.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/6ac884327101413198fd997428cc1e27.png" />
- 可与2，4-二硝基苯肼反应生成黄色沉淀的是（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/bae956a55a934e888b1cabe17e68e866.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/a55be6cad4544a7198346aa1b73398f6.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/7f2334ba5b494271a31027c8f734ee66.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/7dd29a85700641d8baf1a329c5e5b142.png" />
- 下列化合物不能使三氯化铁溶液显色的是（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/d6b1fbe3db92427fb17e6b03441b6314.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/1b39ba90bd784dd4a28af61dec53ee0e.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/bf8365034036486683b612acacc3ed1f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/8af48ec2142d47e38eaf279ac191eafb.png" />
内容
- 0
下列化合物发生亲核取代反应活性最大的是（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/e57c2689c7984597b020823c3c17cfe0.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/4604e9b1bf004c36a84068fbd00db8e5.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/4205ea439468429282bf518c0dcbb095.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/f8810518b81d448b8a178c5189e7f3e1.png" />
- 1
两个体积相同的容器中，分别贮有氮气和氢气，若它们的压强相同，以E1和E2分别表示氮气和氢气的内能，则（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/cc6a1dad7eb84fc7b7af4f45e5d73e77.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/743111956c414d6cafee6d748946cbff.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201712/11a18c44e18f431da261bfcd056b5c38.png"> D: 无法确定
- 2
<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/2205d9f03e724a04b34f2f1045309079.png" />的幅频响应是，幅频响应是。 A: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/760d7fcc2f264ed1b10fb836cb48f565.png" /> B: -1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/21f685d2962e4b6993bfcaa513bdbf68.png" /> C: 2，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/57267e995f86426899ce3cc0177a2343.png" /> D: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/ea8ba62853a94a15a5620c5165e3594a.png" />
- 3
一定量的理想气体，在温度不变的条件下，当压强降低时，分子的平均碰撞频率<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和平均自由程<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />的变化情况是（ ）： A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />都减小． B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />减小而<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />增大． C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />都增大． D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />增大而<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />减小．
- 4
要使<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/c4b80714c3b14a559ae5bdcd09ef1fc6.png"/>是线性方程组AX=0的基础解系，则只要系数矩阵A=（ ）. A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/fb16cbefa5a746599e585bcf30dce878.png"/> B: ［2 1 1］ C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/df5d7a834bd44f44a519eaffffd47d39.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5adacc7663b444d69f148ab2e7a11cf1.png"/>