皮皮学，免费搜题
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【单选题】
当钻孔中地下水位埋藏很深或试验层为透水不含水时,可用( )代替抽水试验,近似测定岩层渗透系数。A.
渗水试验
B.
连通试验
C.
放水试验
D.
注水试验
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举一反三
【单选题】According to one belief, if truth is to be known it will make itself ap parent, so one ______ wait instead of searching for it.
A.
would rather
B.
had to
C.
cannot but
D.
had best
【单选题】It is strange that ___ little animal eats ____ many insects.
A.
such a , such
B.
so, so C such a , so D. so, such