A. 硫酸 B. 氢氟酸 C. 硝酸 D. 柠檬酸 EDTA F. 焦硫酸钾 G)草酸
A. try to find out where the oil is coming from B. call the Master C. have the pump man check the discharge piping D. shutdown operatio
A. 正确 B. 错误