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[判断题]
作业现场的硫化氢浓度达在15mg/m3~30mg/m3之间,连续作业不应超过8h;硫化氢浓度达30mg/m3以上作业人员必须立即佩戴防护面具,并在压缩空气用完之前撤离到安全地带,决不能出现违章行为。()
查看答案
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A.立即安排专人观察风向、风速,以便确定受侵害的危险区;
B.切断危险区的不防爆电器的电源;
C.安排专人佩戴正压式空气呼吸器到危险区检查泄露点;
D.非作业人员撤入安全区。
A.绿牌
B.黄牌
C.红牌
D.蓝牌
A.红
B.黄
C.绿
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.150mg/m3(100ppm)
D.75mg/m3(50ppm)
A.10mg/m3(6.7ppm)
B.15mg/m3(10ppm)
C.20mg/m3(15ppm)
D.30mg/m3(20ppm)