题目
A.20ppm
B.30ppm
C.50ppm
D.100ppm
第1题
A.75mg/m3(50ppm)
B.1500mg/m3(1000ppm)
C.150mg/m3(100ppm)
D.750mg/m3(500ppm)
第2题
A.30mg/m3(20ppm)
B.45mg/m3(30ppm)
C.75mg/m3(50ppm)
D.150mg/m3(100ppm)
第3题
A.30 mg/m3(20ppm
B.45 mg/m3(30ppm
C.75 mg/m3(50ppm
D.150mg/m3(100ppm)
第6题
高含硫油气井是指地层天然气中硫化氢含量高于()ppm的井。
A.50
B.100
C.150
D.200
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