在弱磁场中，以下哪些条件满足磁能级之间的跃迁（）
A:
B:
C:
D:
A:
B:
C:
D:
举一反三
- 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">
- 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">
- 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" />
- 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}。