18[单选题] 光面爆破时，炮孔起爆的先后顺序为：() A.掏槽孔-周边孔-崩落孔 B.周边孔-掏槽孔-崩落孔 C.掏槽孔-崩落孔-周边孔 - 查题网

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河南成教 / 水利工程施工

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18[单选题]
光面爆破时，炮孔起爆的先后顺序为：()

A.掏槽孔-周边孔-崩落孔

B.周边孔-掏槽孔-崩落孔

C.掏槽孔-崩落孔-周边孔

D.周边孔-崩落孔-掏槽孔

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水利工程施工

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