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【多选题】
影响齿轮传动平稳性的主要误差是( )。A.
基节偏差
B.
齿形误差
C.
齿向误差
D.
齿距偏差
E.
运动偏心
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举一反三
【单选题】Generally, mechanical system refers to( )
A.
mechanical transmission system
B.
mechanical actuator
C.
machinery and working process
D.
mechanical components and tools
【简答题】Mechanical docks and watches had appeared by ______.
【简答题】机械安全(mechanical security)
【简答题】机械性消化(mechanical digestion)
【单选题】Generally, mechanical system refers to( )
A.
mechanical transmission system
B.
mechanical actuator
C.
machinery and working process
D.
mechanical components and tools
【简答题】机械性消化(mechanical digestion)
【简答题】The Hillary Clinton fashion effect evidences the huge 1 between how we judge men and women according 2 how they dress. If a female politician doesn't know how 3 dress like a lady, she's lampooned, sha...
【单选题】Why does the professor mention 'mechanical engineering'?
A.
To show that words in mechanical engineering are more specialized and more difficult.
B.
To show that words in some major fields are more difficult to learn than the words used daily.
C.
To show that different learning purposes result in different vocabulary learning strategies.
D.
To show that only people in mechanical engineering need to learn vocabulary in this field.
【简答题】If a politician has a throng of
admirers, there are ________ who like them. (1.0分)A. many people B. a few people
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