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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】8/6R—AH型介质泵中，“8”代表（），“6”代表（）。
A.
“8”为介质泵吸入口的直径
B.
“8”为介质泵排出口的直径
C.
“6”为介质泵排出口直径
D.
“6”为介质泵吸入口直径
【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