在矿井受水害威胁的区域，进行巷道掘进前，不能采用()方法探查水文地质件。
A.物探
B.掘探
C.钻探
D.化探
参考答案：B
If you didn't know the word, in the dictionary. [ ]
A. look it up
B. look up it
C. look at it
D. find it
如何合理施用复混肥料
