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【单选题】
直齿锥齿轮标准模数是指（ ）A.
法向模数
B.
轴向模数
C.
端面模数
D.
大端端面模数
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举一反三
【单选题】The engine will fail to start unless _____.
A.
the pressure of the starting air is high enough
B.
there is enough air in the air reservoirs
C.
the air is supplied into the cylinders in the appropriate sequence
D.
all of the above
【单选题】A closed-end manometer was attached to a vessel containing argon. The difference in the mercury levels in the two arms of the manometer was 12.2 cm. Atmospheric pressure was 783 mm Hg. The pressure of...
A.
122
B.
661
C.
771
D.
795
E.
882
【单选题】When humidity rises, which of the following statements is CORRECT?
A.
The pressure goes up.
B.
Good weather is on the way.
C.
Old people feel pains in their bones or joints.
D.
Young people feel pains in their bones or joints.
【简答题】С начала января 2005 года любители кофе получат новый продукт----саморазогревающуюся банку, которая предоставит им горячий напиток в любом месте и в любое время. 翻译句子,注意形动词和限定从属句的翻译。
【简答题】美国通用汽车创始人是
【单选题】If a refrigeration compressor will not start, the reason may be _____.
A.
the pressure regulating valve is not closing
B.
an excessive lack of refrigerant in the system
C.
badly leaking discharge valves
D.
worn piston rings
【单选题】根据听力音频，回答下列各题： {MP3:http://wximg.233.com/attached/media/20130529/20130529151031703170.mp3}
A.
Doing homework.
B.
Fine, thank you.
C.
Very good.
D.
Writing a book.
【简答题】此听力MP3下载地址：http://www.shuashuati.com/share/p3301342.html
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