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Para 6. Every part of the chicken that could be eaten was used. Gizzards, liver and heart were either fried or cooked in soups. Chicken feet were considered a delicacy to our mom, no doubt a tradition brought over by her parents from the old country. She was the only one in our family who ate them, and after many years of my strongly refusing to take even a taste, she knew better than to try to give me one. Looking back, I'm sure she enjoyed my explosive reaction to her teasing , since it was obvious that she wanted to keep them all to her self. I can still envision her holding a chicken foot over her plate and gnawing on it. all for herself . 划线部分为核心词汇, 需要掌握。
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【简答题】键盘有哪几种组成方式?各自有何特点?按键去抖有哪几种方法?
【判断题】若被审计单位某一银行存款账户的余额为零,则审计人员仍应对其实施函证。( )
A.
正确
B.
错误
【简答题】OCL电路如图所示。回答下列问题:  (1):静态时,输出电压U o 应是多少?调整哪个电阻能满足这个要求?  (2):设V CC =10V,R 1 =R 3 =2kΩ,U BE =0.7V,β=50,P CM =200mW,静态时U o =0,若D 1 ,D 2 ,R 2 中 任何一个开路,将会产生什么后果?
【单选题】电路如图所示,若要满足 u O =-2u i 的运算关系,各电阻数值必须满足 ( ) 。
A.
R 1 = 2 R F , R ' = R 1 // R F
B.
R 1 = R F , R ' = R 1 + R F
C.
R F = 2 R 1 , R ' = R 1 // R F
D.
R 1 = R F , R ' = R 1 // R F
【简答题】有一个单电源互补对称电路如题4-16图所示,设两个三极管的特性完全对称,u i 为正弦波,U CC =12V,R L =8Ω。试回答下列问题:(1)静态时,电容C 2 两端电压应是多少?调整哪个电阻能满足这一要求?(2)动态时,若输出电压u o 出现交越失真,应调整哪个电阻?如何调整?(3)若R 1 =R 2 =1.1kΩ,β=40, ,P CM =400mV,假设两个二极管和R 2 中任意一个开...
【判断题】铝芯聚氯乙烯绝缘电线的代号是BVR
A.
正确
B.
错误
【单选题】铝芯聚氯乙烯绝缘电线的代号是( )。
A.
BV
B.
BVR
C.
BVVB
D.
BLV
【判断题】铝芯聚氯乙烯绝缘电线的代号是BVR
A.
正确
B.
错误
【简答题】键盘有哪几种组成方式?各自有何特点?按键去抖有哪几种方法?
【判断题】若被审计单位某一银行存款账户的余额为零,则审计人员一般不对其实施函证。
A.
正确
B.
错误
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