举一反三
- 逻辑函数F(A,B,C)=AB+BC+AC的卡诺图为（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/7a8254757f8a4fc6ab82fa93a8e86ebf.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/229cbcade3654fb99c66a7c102ec046f.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/1c851f1288be499c92d2a7b40607bd1a.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3b385269839a45df9645db71096c2e81.png" />
- 图中尺寸标注正确的是（） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/c27b2c5bcd5248d2938ff20dcadb3848.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/283d8966e68e476a835df10a7001fa1b.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/99cfc288fcb64fd282a9ad41acac2e70.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/c8163178d3cb46f98f20b4c79e872b18.png" />
- 下列尺寸标注正确的是（） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/c9b1f998550f46f2954ddb9a6e931917.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/2ebdcfcbd422486e8f52decd4b1f3c91.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/713b97186b2a4602a111ab988359072b.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/d21403f12f034db3b26192a552f8f9c1.png" />
- 同或的逻辑表达式为：（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/de7cc25b0fa441acbd1ae351e6b717bf.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/0521e4ead0c94f6b926ad268101e03dc.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/d7e24d5fe0914412afdc9203542a97be.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/1a45c582099646599b854ab6adc648f4.png" />
- 下面的投影图中表示交错直线的是（） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/abd70ceaf2b1417f8db7dcbdafe06a4e.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/69c37bc573b34b00829846f0d05b1b8e.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/467d9b64267e4a99928004e28e8ce78f.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/ab49baad1d7f4b4bbfd286c3225870bb.png" />
内容
- 0
n个变量的逻辑函数一共有最小项（ ）个。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/bc6b2e9c189248feb007810275b3ba46.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/a04259d5f82c487eb3fe219bdfe142fd.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/994cb971d6b0496e97023da8982c9ee1.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/c7dc4e3adc954375b97a1f5f805272cc.png" />
- 1
下列函数中，在复平面上为解析函数的是( ). A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3f0b6fb48fce4383ad5b3ab4b8f9b85c.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/636eb9bb3ce04a3fbc7427723f28c6ba.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/47f094504d954232985bd754c9e7e936.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3a85c12341aa48aaa2990250bcbe235b.png">
- 2
<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/2205d9f03e724a04b34f2f1045309079.png" />的幅频响应是，幅频响应是。 A: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/760d7fcc2f264ed1b10fb836cb48f565.png" /> B: -1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/21f685d2962e4b6993bfcaa513bdbf68.png" /> C: 2，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/57267e995f86426899ce3cc0177a2343.png" /> D: 1，<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201903/ea8ba62853a94a15a5620c5165e3594a.png" />
- 3
http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/2bbf6c847a7f44cfa48e4e13438340ba.png
- 4
http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/ae6c872eb36d4c7cafad2082db629c9e.png