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【单选题】
由NPN管组成的共射放大电路,若测得V CEQ =V CC ,V CC 为电源电压,则可判断该管处于( )。A.
放大状态
B.
饱和状态
C.
截止状态
D.
击穿状态
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举一反三
【单选题】What is the difference between Western and Chinese customs at funerals?
A.
People in China make no noise at all at funerals.
B.
Chinese tend to show little feelings at funerals.
C.
Westerns tend to walk very close to the bereaved.
D.
In Western countries, a solemn quiet always prevails.
【简答题】机床的加工精度和使用寿命在很大程度上取决于机床导轨的质量,目前数控机床使用较多的是____导轨和____导轨,也有采用____导轨的。
【简答题】At funerals, Chinese pay respect to the dead and express their sorrow by wearing white and writing elegiac couplets in_____________.
【简答题】yize the following social reality by using what you know about human COMMUNICATION. Funerals in U.S.A. and Irish: Somberness and silence are usually the rule at a solemn Chinese funeral, while an ...
【判断题】At funerals,Chinese pay respect to the dead and express their sorrow by wearing white.
A.
正确
B.
错误
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