放大电路如图所示,如UCC>>UBE,且ICEO≈0,则在静态时,该三极管工作的状态是( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/cbda8166ac344b52a248e92f60dca808.png
举一反三
- 某放大电路如图所示。设VCC>>UBE,ICEO≈0,则在静态时该三极管处于()。
- 中国大学MOOC: 某放大电路如图所示。设VCC>>UBE,ICEO≈0,则在静态时该三极管处于()。
- 图示单元体应力状态,沿x方向的线应变εx可表示为( )。 <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/9fdd7efe625f4047bb61ef38f5aea871.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/5da2d36f7ef84cbc8396b1e27b775bf4.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/164a3d85fdb6462696d83d62b92b2435.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/9e37e58e1c12442e8e018c0af637dfdf.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/41fd81417e5f47bea1db35fed7c2c44e.png" />
- 在对称循环的交弯应力作用下,构件的持久极限为( )。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/5e3cddf9e66643319bf5ff705bc3861b.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/ee22a4a0f41b4cdba536aa142d522b47.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/c75dd41c5a4242c78b0846e38ac11a4a.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/689e0f4d28a044c2839b35cd76770a3b.png" />
- 拉普拉斯(Laplace)方程的表达式为( )。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/26731bcad75f41389448b29292940653.jpg" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/40e7e55a72ee44f59b45d20c84ebe3a6.jpg" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/c65a79ea4d754174b99f34020d6e1735.jpg" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/139e8d3dc37941549e7b6b1731243172.jpg" />