下列4个推理定律中，正确的是（ ） A: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/bc426d3543dc409db074154a64afb5c9_s1.jpg"> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/d89869317df9433caa1c066f3c7d7f26_s1.jpg"> C: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/b9c4b0574b5244e38513d3395f3209b6_s1.jpg"> D: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/0b2df5df8a754a2383c1b9366b86f127_s1.jpg">

以下比较符合理想浮雕压缩的是（）。 A: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/f977a577b66b4cf0ba1d3f84dc1b110b_s1.jpg" /> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/88d92f5a7ac247359e5e80f38e1e8da8_s1.jpg" /> C: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/6d13fb8701054a13bc9ee1d7f3777821_s1.jpg" />

下列哪些复合函数是由三个基本初等函数复合得到的？ A: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202008/90b516c116184141a759087005e5a664_s1.png"> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202008/c66c9812dff84432b588c789d8d78bd2_s1.png"> C: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202008/eb9e5d1086c1483bb9d9167df8e3e5ff_s1.png"> D: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202008/d0778adda0dd46548cb40eac7f967270_s1.png">

在弱磁场中，以下哪些条件满足磁能级之间的跃迁（） A: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202011/e0f9b8964b1e46f4a64e5a33bf57cb65_s1.jpg" /> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202011/4d33892279a645c9b2fed36b7780633d_s1.jpg" /> C: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202011/49ddc70118344744a70d9429b1f956a6_s1.jpg" /> D: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202011/988bdf223501442796b6578459f1852a_s1.jpg" />

设p：明天天晴；q：我去爬山；那么“除非明天天晴，否则我不去爬山。”可符号化为( ) A: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/93a4713c76db47cfb245faaed658d3b7_s1.jpg" /> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/1801edd8748e47979a5bbe8beb6fe03f_s1.jpg" /> C: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/4504f7c7b7144206a57350eccec04317_s1.jpg" /> D: q→p

{1,2,3,6}<img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/5b0dc8b842ca466aa2c6b4c417309973_s1.jpg" />{2,3,4,5}={1,4,5,6}。

该图中的配合制为基轴制。（ ）<img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/897f0c4737fd4d6b980210df1f9c9fb0_s1.png" />

设个体域A={a,b}，公式"任意xP(x)在A中消去量词后应为（ ） A: P(a) B: P(b) C: P(a)<img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/bb3b2cf765a047d6a536ab00f276bf25_s1.jpg">P(b) D: P(a)<img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/a1a56ab460a64c4fba0801a0a2d27fb3_s1.jpg">P(b)

<p>以下滑动窗口说明通信双方处于什么状态（&nbsp;）？<img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202009/9b21707d4eec4f379341e2fca3c4e6a9_s1.png" title="QQ截图20200930091346.png"/></p>

一个稳定的线性时不变因果系统的系统函数H（z）的收敛域为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/a7563f3e60694a96b3b8c4bc57bd2344.png"/> B: <img src="https://image.zhihuishu.com/zhs/aidedteaching/demo/202012/1a83974159a44a68a5e0a60738807710_s1.png" /> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/66e0e9cf8d0c449e8877f94183e23d89.png"/> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202008/2d569f78514c45ce8e308f36af48361c.png"/>