，B=Р(Р(A)) 下列（ ）表达式不成立。A:
B:
C:
D:
举一反三
- 下列电极电势最小的是： A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/dad3349a56e84119aff354de027c99e1.png"/> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/980bfc83fd624e14ab4d98cc5b6f71dd.png"/> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/a54b31ea021644c788a5c687342ced4d.png"/> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/8851284b569348549a0a28ded6b2cff1.png"/>
- 已知主视图和俯视图，下面左视图画法正确的有（ ）<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/2bcab5bbb4024d99b27781c7c286d861.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/c740df10c8d64a5c9f269c0808cfba30.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/d19031d8c17543f699d8827fa6ac1249.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/1780a38439af44618170b420943a6b6d.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/8b29c3cc4c2e4f3e919c5f22d4ac96f1.png" />
- 已知主视图和俯视图，下面左视图画法正确的有（ ）<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/0e67a6814bf3453d8a2560ad2803175b.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/9cbbab2efe124ef98699ab70b405efa7.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/43768386d66b41419559fe5bf0fb308d.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/3880af04e89d468c8c94acccd953d9c7.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/d4f57df49926458fba76fe114e40f01c.png" />
- 关于螺纹画法,正确的是 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/9ccba4619f94435c98b9ae7570b942d9.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/4bc6e6bda3eb4599aac46a7006ed3c17.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/cbdbd84b5748432d8d69e846b62109af.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/177c1236fbdd49ee899e6f362f3211e6.png" />
- 下面螺纹画法正确的有（ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/154170f305f9495183d6eadbbfbc7526.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/5c82cb80164d4bff91f00d2433c71f8f.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/71ba69fdd015468dbb356bb55a217725.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/c510d567fcf749eb8b38b64b08a447d8.png" />
内容
- 0
下列谓词公式中，( )是等值的。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/3ad0f562353b4463b9b31a3a773c1153.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/85d2bd83d84b43dc83ba5c1749871d69.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/0b76f52c16ba411f96a0030d91b4f8b9.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/4f1748ea22f049dea7381c3f1171c079.png">
- 1
下列函数为有界函数的是（ ）. A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/8b29e23e896d48fbb32316cf188c7897.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/00a2ecf9d8814be9996a25fafd9205f8.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/90cc2cce15bb40a08b7c102e9d5eb020.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/df59aabc218b4c67afbd897414705118.png">
- 2
下列化合物属于Lewis碱的是（） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/da219e574c064a07ae79037cdd7235ff.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/5658b155209344b495dd0915698e9e25.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/ca4e3cb71b804ed1bc83d096fcd5e6dc.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/e85599703e764472b21aa58bc2774424.png" />
- 3
下列化合物能发生碘仿反应的是：（） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/f120adb23e7c4851a4cbf8b7b92d35db.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/ec33b86129be4d7a92f0e11a27ee943a.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/e1620e0d1f5e4e1fb00ee7daff976354.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/f2d1dc15ec0148d9bc92fd337c4df168.png" />
- 4
以下选项中，全部都是表格标签的是（ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/a6c4de14c1e14465ac8f152bc52545ea.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/bc06abdf4a1c419cb5dab725f83a02d0.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/0aeb916868c4476ab7d0549a32a4ca4e.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/0cbabf33298048578d5b9ef94a3c2b0c.png" />