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【单选题】
在电压型单相半桥逆变电路中，电阻性负载输出的电压电流波形和电感性负载输出的电压电流波形分别是（）。A.
、、三角波、三角波
B.
、、、
C.
、三角波、、三角波
D.
、、、三角波
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举一反三
【单选题】---Why don’t you do some shopping in the second-hand store? -Well, the goods there are ________, but _________.
A.
more expensive, worse
B.
more expensive, not as bad
C.
cheaper, good enough
D.
cheaper, not as good
【单选题】How does the book cultivate readers' interest in physics?
A.
It avoids detailing abstract concepts of physics.
B.
It contains a lot of thought-provoking questions.
C.
It demonstrates how they can become physicists.
D.
It provides experiments they can do themselves.
【简答题】A．The store doesn't have the model he wants. B．The store doesn't take credit cards. C．The clerk insults the man. D．The clock radio is too expensive.
【简答题】The store clerk won't accept the item back because _____.A. the
store is closing soon B. the
return period had passed C. the man doesn't have the proper receipt
【单选题】在进行房屋建筑面积测算时,关于计算全部建筑面积范围说法不正确的有( )
A.
永久性结构的单层房屋,按一层计算建筑面积
B.
穿过房屋的通道,房屋内的门厅、大厅,均按一层计算面积
C.
楼梯间、电梯(观光梯)井、管道井等均按房屋自然层计算面积
D.
有伸缩缝的房屋,伸缩缝均不计算建筑面积
【单选题】The judge didn't award compensation to the chain store because ______.
A.
the store was responsible for what happened
B.
the report of the event benefited the store a lot
C.
the tramp had stolen nothing of value
D.
the tramp was penniless
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