单项选择题
A.0.72% B.0.79% C.0.86% D.0.96%
A.147mg/L,53mg/L;147mg/L,200mg/L B.147mg/L,53mg/L;200mg/L,200mg/L C.53mg/L,147mg/L;53mg/L,200mg/L D.53mg/L,147mg/L;200mg/L,200mg/L
A.30m3 B.25m3 C.35m3 D.40m3