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【单选题】
当二极管外加的正向电压超过死区电压时,电流随电压增加而迅速( )
A.
增加
B.
减少
C.
.饱和
D.
截止
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参考答案:
举一反三
【单选题】M的加工仿真主要检验零件的( )。
A.
尺寸精度
B.
位置精度
C.
粗糙度
D.
形状是否正确.
【简答题】Match the corresponding meaning. Jack is a boy from USS. He says : 1.I need a pair of pants ! what does he mean? 2.I need a bag of chips! what does he mean?
【简答题】阅读理解。 'All work and no play makes Jack a dull boy.' is a popular saying in the USA. We need to rest as we need to work. Without enjoying recreation (娱乐) we can't keep ourselves in good health and high...
【单选题】M的加工仿真主要检验零件的( )。
A.
尺寸精度
B.
形状是否正确
C.
粗糙度
D.
位置精度
【单选题】The boy is very thirsty. He ______ some water. [     ]
A.
is needing
B.
do need
C.
needs
D.
need
【单选题】The boy be very naughty, but he is very lovely.
A.
might
B.
can
C.
may
D.
need
【单选题】Dave is a good boy. He often helps _____ when they need help. [     ]
A.
other
B.
others
C.
another
D.
the others
【简答题】The boy is a______________ to wash clothes alone.You don’t need to help him.
【简答题】图示电路中,A、B点的电压为UAB =_____________V。【图片】
【单选题】相对而言,比较适用于事件类、调查类等新闻报道的结构方式是:
A.
倒金字塔式
B.
沙漏式
C.
递进式
D.
悬念式
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