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【单选题】
如图a所示,在物体上作用有两力偶(【图片】,【图片】)和(【图片】,【图片】),其力多边形封闭(图b)。则该物体。【图片】
A.
平衡
B.
不平衡
C.
不能确定
D.
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参考答案:
举一反三
【简答题】The operate switch (locate) ______ behind the front door of the VCR switches the VCR on and off.
【单选题】After the woman closed the front door, she .
A.
looked round quickly
B.
started breathing again
C.
rested before moving
D.
walked straight towards the front door
【多选题】光纤按传输模式主要分为()两大类。
A.
玻璃光纤
B.
塑料光纤
C.
单模光纤
D.
多模光纤
【单选题】_____ the front door _____, he had to enter the room through the back door.
A.
Seen; painted
B.
Seeing; painted
C.
Being seen; being painted
D.
Seeing; being painted
【简答题】Why do people paste the picture of the Door God on the front door?
【单选题】They ________ to enter the building by the back door; however, the front door was locked.
A.
are supposed
B.
aren’t supposed
C.
weren’t supposed
D.
were supposed
【简答题】They ________ to enter the building by the back door; however, the front door was locked. A) weren’t supposed B) wouldn’t be supposed C) were supposed D) would be supposed
【单选题】Try the back door if nobody answers the front door.
A.
to knock at
B.
knocking at
C.
and knock at
D.
and knocking at
【简答题】Last Sunday the Greens went to the movies. They got home very late. Father opened the front door and went into the house. It was very dark, so mother turned on the light. On the way to their bedroom, ...
【简答题】Whether you come through the front door, or sail right up to the dock, you’ll enjoy this wonderful restaurant, where the fish and other seafood are fresh and truly a treasure.(翻译)
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