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【判断题】
斜齿轮具有法面和端面两种模数,其中以端面模数作为标准模数。A.
正确
B.
错误
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举一反三
【简答题】The ( )of the food supplies in the earthquake area began two days ago.
【单选题】Food supplies in the flood-stricken area ______. We must act immediately before there’s nothing left.
A.
have run out
B.
are running out
C.
have been run out
D.
are being run out
【单选题】Food supplies in the flood-stricken area . We must act immediately before there’s left.
A.
have run out
B.
are running out
C.
have been run out
D.
are being run out
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