第一格林公式为：https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/caa8cd4f3b5e471c8d54fb9739e25a4f.png
举一反三
- 设论域为整数集，下列公式中值为真的是（ ） A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/2711e476b621420282b7b5a9e859fa6b.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/170e20f6765346308a85d187b2cb10e9.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/7dde811e51824a06a3e118fe0c07d6fb.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/e2efbc62e6bc46e1b21e083664b89585.png">
- 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">
- 下列谓词公式中，是逻辑有效式的是（ ）。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/fd0bc7b26c6e4d91a8ed04b00fa26874.png"> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/42b2e82315144952b187beceb9f746e3.png"> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/efd3b37c91244207886d59b1bd2fdb1e.png"> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/e91d4c4332bb4e12a6e417031fb605fe.png">
- 设A=<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/bc546fc03fdb4ba3b7e6b144b6371d7f.png" />，B=Р(Р(A)) 下列（ ）表达式不成立。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/6e615703da60435893f9e9a9273e12e5.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/64c831067d054e71a6c76f43849d450d.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/72023a5250e44c12b98923044194f13d.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/202002/c48e039a739c4502830eee7ae0ac1678.png" />
- 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">