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【单选题】
粗牙普通内螺纹大径为 16,螺距为 2,左旋,中、公差带代号为 6H,中等旋合长度,则其螺纹标记为( )。
A.
M16错2－6H－LH
B.
M16－6H－LH
C.
M16错2LH－6H
D.
M16LH－6H
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举一反三
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all
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20 ×40×60厘米
C.
20 ×40×55厘米
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【单选题】_______ many people first go to the Internet for information, it is not always the best place for what you need.
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