题目内容
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[单选题]
SY/T5087-2017《含硫化氢油气井安全钻井推荐作法》中规定:放喷管线应至少装两条,其夹角为90º~180°,管线转弯处的弯头夹角不应小于120°,并接出距井口不少于()m
A.75
B.100
C.120
D.150
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A.75
B.100
C.120
D.150
A.33
B.63
C.93
D.103
A.居民住宅
B.学校
C.公路
D.铁路和厂矿
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.50mg/m3(33.3ppm)
D.75mg/m3(50ppm)
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.50mg/m3(33.3ppm)
D.75mg/m3(50ppm)
A.5.4mg/m3(2ppm)
B.13.5mg/m3(5ppm)
C.32.5mg/m3(12ppm)
D.271mg/m3(100ppm)