和逻辑式<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/6e44002682ae467796cf764f95bddba9.png" >表示不同逻辑关系的逻辑式是（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/2ed596686e0b4888be3e30cf991d4790.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/106e515ddf2e4efaaadb70de431d11ca.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/61241e1bfc1a46c6bf504129ed8c500d.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/b6133dc7cf894cc586f45f7a945b8325.png" >

<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/48fc4686323b4fc2aed9a5ded068e010.png" />则MnS在盐酸中溶解的平衡常数为（ )。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/92fc7a394f754ea59f5812ddedfa9ca1.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/4f1e00c110584145843649c7c0f0fa55.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/ca9777100e5d4abeaa282239afdb5ee0.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/aacd92054a5745feb6f3c98233158b95.png" />

设系统的初始条件为零，其微分方程为：<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/9c4c212cc1594dd19dcfc992512ba0e1.png" />，则_____。() A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/3f8dd968db6e49f5a261281ea5f038bc.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/a73ceb98e53043eb9817c3014694d0b3.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/cfbf541fa5504f819df5429a3c181a0d.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/404ca95df5b34ade860d159893fbb0e2.png" />

设<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/995e39f9a3eb4d63889fb16f7a71ab39.png" />此复合函数由（ ）简单函数复合而成。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/c05e1e0bb27a44ea9923d749b2a7590d.png" /> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/7f6ba3596d1d4a3a8fe2bccb09ef5923.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/47a1f97cbc454d3dad189540f3ae1209.png" /> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/61c1ed05a21b47528fcebcfe7ffe85f9.png" />

下列运算正确的是（）. A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/b365f98671664fe28462e7f104a04561.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/4b0c61e395884131b3bd01a42cf554f2.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/40f0e907cde84b76bb93fce803d3960c.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202009/ce3ec94698c242069f90ba8debd032db.png" >