悬浮液的回收净化的主要任务是（）。

A、减少加重质的损失

B、从悬浮液中排出煤泥和粘土

C、适当提高悬浮液中煤泥含量

D、保证悬浮液性质稳定

E、从稀悬浮液和排放水中收集加重质

In spoken English of some areas in the US, the "r" sounds at the end of the words（）

A. are dropped

B. drop

C. are being dropped

D. have dropped