当降水深度更大，在管井内用一般的水泵降水不能满足要求时，可采用（）降水。
A.轻型井点
B.深井泵法
C.管井法
D.喷射井点
参考答案：B
Since you have accepted the job, you have no _______ but to do it well, however difficult it is.
A．disappointment
B．alternative
C．agreement
D．allowance
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