一、单选题(30题,每题1分,共30分)©£JQÇo©bbs.3c3t.comy
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1*.超前钢管与钢架支撑配合使用时,应从钢架( )穿过,尾端与钢架焊接。©£JQÇo©bbs.3c3t.comy
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A、上部 B、下部 C、中部 D、腹部©£JQÇo©bbs.3c3t.comy
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2.爆破开挖一次爆破的进尺应该( )。©£JQÇo©bbs.3c3t.comy
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A、为2m B、为3m C、为3.5m D、根据围岩等条件定©£JQÇo©bbs.3c3t.comy
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3*.喷射混凝土支护,喷射前要检查开挖( )的质量,处理好超欠挖。©£JQÇo©bbs.3c3t.comy
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A、断面 B、尺寸 C、面积 D、夹层©£JQÇo©bbs.3c3t.comy
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4、地质雷达信号属于( )。©£JQÇo©bbs.3c3t.comy
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A、γ射线©£JQÇo©bbs.3c3t.comy
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B、a离子©£JQÇo©bbs.3c3t.comy
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C、紫外线©£JQÇo©bbs.3c3t.comy
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D、电磁波©£JQÇo©bbs.3c3t.comy
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