若铺填完各层反滤料后未能达到（），将上层填料拆除，再按层次加_爱下问搜题

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问题单项选择题

若铺填完各层反滤料后未能达到（），将上层填料拆除，再按层次加厚。

A.截断渗流

B.某固定高度

C.制止涌水带沙的效果

D.堵住出水

答案

参考答案：C

选择题

— He got his first book published. It turned out to be a bestseller.
— When was _____?
— _____ was in 2000 when he was still in college.

A. that; This
B. this; It
C. it; This
D. that; It

填空题

空塔线速过高，会造成（）严重，降低塔盘效率。