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【单选题】
许多标准件螺帽罩、空心螺钉（）生产。
A.
连续模
B.
第一次压延模
C.
有压边圈的模具
D.
断续模
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【单选题】用螺钉紧固机器零件时，通常要在螺帽与零件之间及螺母与零件之间各垫一个较大的垫圈片，使用垫圈片的目的是（ ）
A.
螺钉拧得更紧
B.
以防零件的紧固处发生变形
C.
减小螺母、螺帽对零件的压力
D.
使紧固的零件更美观
【单选题】In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building...
A.
the latter uses ready-made internal features
B.
panels are cast in a level position
C.
the former is used to build walls and floors while the latter to construct bathrooms or bedrooms
D.
the former is more expensive than the latter
相关题目：
【单选题】用螺钉紧固机器零件时，通常要在螺帽与零件之间及螺母与零件之间各垫一个较大的垫圈片，使用垫圈片的目的是（ ）
A.
螺钉拧得更紧
B.
以防零件的紧固处发生变形
C.
减小螺母、螺帽对零件的压力
D.
使紧固的零件更美观
【单选题】In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building...
A.
the latter uses ready-made internal features
B.
panels are cast in a level position
C.
the former is used to build walls and floors while the latter to construct bathrooms or bedrooms
D.
the former is more expensive than the latter
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