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[单选题]
当吸入浓度达到()m3/mL以上时,很快失去知觉,几秒钟后就可能出现窒息,呼吸停止和心脏停跳,中毒者一般无法自救。
A.800
B.700
C.600
D.500
查看答案
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A.800
B.700
C.600
D.500
A.220mg/m3(150m3/mL)
B.72mg/m3(50m3/mL)
C.150mg/m3(100m3/mL)
D.300mg/m3(200m3/mL)
A.22mg/m3(15m3/mL)
B.72mg/m3(50m3/mL)
C.15mg/m3(10m3/mL)
D.30mg/m3(20m3/mL)
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.62.5mg/m3(50ppm)
D.31.25mg/m3(25ppm)