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【单选题】
下列( )不属于机床夹具的三大组成部分之一。A.
夹具体
B.
定位装置
C.
对刀装置
D.
夹紧装置
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反馈参考答案：
举一反三
【简答题】最古老的保险是从海上保险发展起来的。( )
【单选题】According to Richard,what was the concept of health before the 1940s?
A.
Mechanical operation of the body.
B.
Absence of disease or illness.
C.
Physical, mental and social well-being.
D.
Clean water, improved sanitation and housing.
【单选题】What publications should a GMDSS Operator consult regarding the proper set-up and operation of vessel equipment ________．
A.
ITU Publications
B.
The manufacturers instruction manuals
C.
Part 90 of the FCC Rules and Regulations
D.
Code of Federal Regulations，Title 47，Part 80，Subpart W
【单选题】What is the major function of paragraph 1?
A.
To arouse the reader's happiness.
B.
To introduce the theme of the whole passage.
C.
To summarize the whole passage.
D.
To sate the complete bad uses of TV.
【简答题】深沟球轴承内外圈剖面线方向应 。
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