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【简答题】
螺纹联接,用螺纹件(或被联接件的螺纹部分)将被联接件联成一体的可拆联接。常用的螺纹联接件有_______、_______和_______等,多为标准件。
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【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