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【单选题】
划线时在零件的每一个方向都需要选择一个基准,立体划线时一般要选择( )划线基准。A.
两个
B.
三个
C.
四个
D.
五个
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反馈参考答案：
举一反三
【单选题】Finding her car stolen, _______.
A.
a policeman was asked to help
B.
the area was searching thoroughly
C.
it was looked for everywhere
D.
she hurried to a policeman for help
【简答题】Yang Nan, 17, was happy to move to her new home in a northern area of Beijing. She was told that her neighborhood used to be rich farmland planted with vegetables, corn and wheat. But looking at the n...
【简答题】在磁盘上容易导致存储碎片发生的物理文件结构是（）。（连续组织方式/链接组织方式/索引组织方式）
【单选题】The pregnant woman always sits in the nonsmoking area of restaurants to reduce her exposure ________ smoke.
A.
to
B.
with
C.
in
D.
from
【单选题】Finding her car stolen, ______. [ ]
A.
a policeman was asked to help
B.
the area was searched thoroughly
C.
it was looked for everyone
D.
she hurried to a policeman for help
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