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【简答题】
钻头的刚性和精度都较差,故钻削加工精度低,一般尺寸精度为 ,粗糙度为 。
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皮皮学刷刷变学霸
举一反三
【简答题】河里原来有42只鸭，走了8只鸭，来了6只鸭，河里现在有多少只鸭？
【单选题】The author agrees that the bar in general is ______.
A.
unhelpful
B.
harmful
C.
ugly-looking
D.
marketable
【简答题】若调运方案中的某一空格的检验数为1，则在该空格的闭回路上调整单位运量而使运费增加 。
【单选题】In general, our society is becoming one of giant enterprises directed by a bureaucratic management in which man becomes a small, well-oiled cog (齿轮) in the machinery. The oiling is done with higher wa...
A.
a necessary part of the society though each individual's function is negligible
B.
working in complete harmony with the rest of society
C.
an unimportant part in comparison with the rest of the society, though functioning smoothly
D.
a humble component of the society, especially when working smoothly
【单选题】In general, our society is becoming one of giant enterprises directed by a bureaucratic management in which man becomes a small, well-oiled cog in the machinery. The oiling is done with higher wages, ...
A.
a necessary part of the society though each individuals function is negligible
B.
working in complete harmony with the rest of the society
C.
an unimportant part in comparison with the rest of the society though functioning smoothly
D.
a humble component of the society, especially when working smoothly
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