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判断题
根据《水利水电工程施工通用安全技术规程》,明挖爆破的预告信号是间断鸣三次长声,即30s、停、鸣30s、停、鸣30s。
A
对
B
错
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更多 “判断题根据《水利水电工程施工通用安全技术规程》,明挖爆破的预告信号是间断鸣三次长声,即30s、停、鸣30s、停、鸣30s。A 对B 错” 相关考题
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根据《水利水电工程施工通用安全技术规程》,下列关于明挖爆破音响信号的说法正确的是()。
A.预告信号是间断鸣三次长声,即鸣30s、停、鸣30s、停、鸣30sB.准备信号是间断鸣一长、一短三次,即鸣20s、鸣10s、停、鸣20s、鸣10s、停、鸣20s、鸣10sC.起爆信号是连续三短声,即鸣10s、停、鸣10s、停、鸣10sD.解除信号是一次长声,鸣60s
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明挖爆破时,预告信号是( )。
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D.鸣20s、停、鸣20s、停、鸣20s
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明挖爆破时,准备信号是( )。A.鸣30s、停、鸣30s、停、鸣30s
B.鸣20s、鸣10s、停、鸣20s、鸣10s、停、呜20s、鸣10s
C.鸣10s、停、鸣10s、停、鸣10s
D.鸣20s、停、鸣20s、停、呜20s
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明挖爆破时,准备信号是()。A . 鸣30s、停、鸣30s、停、鸣30s
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C . 鸣10s、停、鸣10s、停、鸣10s
D . 鸣20s、停、鸣20s、停、呜20s
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明挖爆破时,起爆信号是( )。
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B、鸣20s、鸣10s、停、鸣20s、鸣10s、停、鸣20s、鸣10s
C、鸣10s、停、鸣10s、停、鸣10s
D、鸣20s、停、鸣20s、停、鸣20s
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明挖爆破时,起爆信号是()。A、鸣30s、停、鸣30s、停、鸣30sB、鸣20s、鸣10s、停、鸣20s、鸣10s、停、鸣20s、鸣10sC、鸣10s、停、鸣10s、停、鸣10sD、鸣20s、停、鸣20s、停、鸣20s
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根据《水利水电工程施工通用安全技术规程》,明挖爆破的解除信号是()。A、间断鸣三次长声,即鸣30s、停、鸣30s、停、鸣30sB、间断鸣一长、一短三次,即鸣20s、鸣10s、停、鸣20s、鸣10s、停、鸣20s、鸣10sC、连续三短声,即鸣10s、停、鸣10s、停、鸣10sD、一次长声,鸣60s
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单选题明挖爆破时,起爆信号是()。A
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