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【单选题】
机床在安装时必须( ),以免由于重力分布不合理而引起局部加快磨损和变形。A.
使基础合适
B.
把机床放平稳
C.
使垫地脚螺钉相对
D.
找正水平
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【单选题】Section C: Directions : In this section, you will hear three short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. Afte...
A.
She buys many clothes.
B.
She buys a lot of chocolate.
C.
She eats a lot of things.
D.
She sleeps a great deal.
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A.
in
B.
at
C.
for
D.
of
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【简答题】Section C Directions: In this section, you will hear several short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. Afte...
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【单选题】Question 17-20 are based on the following passage. Fill in the blanks with the best transitional expression. I’ve had a lot of trouble with my car leaking oil lately. First, there’s a pool of oil two ...
A.
Before
B.
However
C.
In the meantime
D.
After
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