当基坑降水深度超过8m时,比较经济的降水方法是()。
A.轻型井点法
B.喷射井点法
C.管井井点法
D.明沟排水法
参考答案:B
While I __________ to the English programes, mother __________ outside.[ ]
A. listened; was washing
B. was listening;washed
C. was listening; was washing
D. listened; was washing
信息化时代唯一持续的竞争优势,只能来自于比竞争者更快的()。
A.自我反省
B.放弃自我
C.自我拼搏
D.更新自我