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【单选题】
链传动属于()。A.
带有中间挠性件的啮合传动
B.
两零件直接接触的啮合传
C.
两零件直接接触的摩檫传动
D.
带有中间挠性件的摩擦传动
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反馈参考答案：
举一反三
【单选题】According to the author, differences between dictionaries or in a dictionary usually result from
A.
varied definitions of a word.
B.
the different purposes of making them.
C.
misinterpretations of users.
D.
different judgment of the compilers.
【判断题】Full pronunciation of the word refers to the pronunciation of the word in a dictionary.
A.
正确
B.
错误
【简答题】The author cites the behavior. of warm-blooded mammals in order to illustrate which of the following?
【单选题】You can verify the spelling of the word by looking in a dictionary.
A.
correct
B.
investigate
C.
confirm
D.
find
【单选题】In order to prevent stress from being set up in the metal, expansion joints are fitted which ______ the stress by allowing the pipe to expand or contract freely.
A.
relieve
B.
reconcile
C.
reclaim
D.
rectify
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