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【单选题】
剖切面通过实心轴和标准件的轴线、标准件对称中心线（面），这些零件按不剖切处理，仍画其外形。若剖切面垂直上述零件的轴线或对称线（面），需按（）处理。
A.
剖切
B.
不剖切
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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