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【简答题】
如图1-29所示结构中,各构件重量不计,杆AB上作用有力F,则____ 4.AB杆为二力杆 B.BC构件为二力构件 C.没有二力构件 D.系统不可能平衡
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【简答题】动圈式振动传感器，其输出感应电动势e与线圈相对于磁场的（）呈正比。如在测量电路中接入（）电路和（）电路，还可用于测量振动的位移加速度。
【单选题】I’d like to arrive 20 minutes early ________I can have time for a cup of tea.
A.
as soon as
B.
as a result of
C.
in case
D.
so that
【简答题】The age of Information Technology has taken a lot of people by surprise. While it has become a way of life for some, others know very little about it and may be unlikely to learn. ually we will h...
【简答题】对于线振动速度传感器,其输出的( ) 正比于被测速度。
【单选题】I'd like to arrive 20 minutes early ______ I can have time for a cup of tea.
A.
as soon as
B.
as a result
C.
in case
D.
so that
【简答题】液压系统的检查通常采用 和 。
【单选题】. I remember putting the tape recorder in the corner, but what _______ it?
A.
has happened on
B.
has become of
C.
has happened
D.
has taken
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