A.15 B.20 C.10 D.100
A.50 B.150 C.200 D.2000
1.泥漿性能變化:密度降低粘度上升,PH值降低 2.出口泥漿變化:出口液面槽氣泡增多有刺鼻氣味、
A.15mg/m3(10ppm) B.30mg/m3(20ppm) C.150mg/m3(100ppm) D.75mg/m3(50ppm)
A.二氧化碳 B.氮?dú)?br /> C.甲烷 D.氧氣