浅孔爆破的钻孔深度最大值为()m。A.3 B.4 C.5 D.6

作者: rantiku 人气: - 评论: 0

问题浅孔爆破的钻孔深度最大值为()m。

选项 A.3 B.4 C.5 D.6

答案 C

解析教材P68 孔径小于75mm、深度小于5m的钻孔爆破称为浅孔爆破。故本题应选C。

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