【单选题】【消耗次数：1】
由于转子受有不平衡得径向液压作用力，所以单作用叶片泵一般不宜用于高压。该说法（ ）
①
正确
②
错误
参考答案：
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相关题目
【多选题】
关于作用力与反作用力下列说法正确的是（ ）
①
作用力与反作用力作用在同一物体上
②
作用力与作用力方向相反
③
作用力与反作用力大小相等
④
作用力与反作用力沿同一直线分别作用在两个物体上
⑤
作用力与作用力方向可以根据计算确定
随机题目
【单选题】
Things never went _____ as we had expected
①
so smoothly
②
smooth
③
so smooth
④
smoothly
【单选题】
Everyone of them _______ tired and wanted a good rest.
①
seems
②
is seemed
③
was seemed
④
seemed
【单选题】
Peter: How about going to the movies tonight then?Mary: ____
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I don’t know.
②
The movie is very interesting.
③
That sounds good.
④
The movie is very boring.
【单选题】
John was going to _______ Mary by telling his friends how much weight she had gained.
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essential
②
embarrass
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elementary
④
consider
【单选题】
The classroom is quite clean ____ some waste paper on the floor.
①
without
②
besides
③
except
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except for
【单选题】
All the men were under heavy____ working day and night
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prize
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rain
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pressure
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reward
【单选题】
—I’ve got an offer in New York. —Oh, ____! But I’m going to miss you.
①
That’s too bad
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I’m sorry
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I beg your pardon
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That’s great
【单选题】
The ____child was learning to walk again gradually.
①
broken
②
harmed
③
injured
④
enable
【单选题】
You never told us why you were one hour late for the last meeting, ____?
①
weren’t you
②
didn’t you
③
have you
④
did you