题目内容

下列哪种搅拌机械宜搅拌轻骨料混凝土：（）

A. 鼓筒式
B. 强制式
C. 双锥式
D. 自落式

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泵送高度在50m以下时，泵送混凝土碎石的最大粒径与输送管的内径比宜为：（）

A. 1∶5
B. 1∶7
C. 1∶2.5
D. 1∶3

Old age does more than _____ away our most cherished memories; it also seems to diminish our ability to imagine things.

A. put
B. break
C. steal
D. keep

I got ____ in the traffic jam, or I would have arrived earlier.

A. lost
B. sucked
C. stick
D. stuck

The consumer market is ____ with electronic goods.

A. compulsory
B. saturated
C. tropical
D. trivial