“quality；quantity”，正确的翻译为（）。

A.质量；重量

B.数量；重量

C.质量；数量

D.数量；质量

An inert gas system installed on a tanker is designed to（）.

A.aid in the stripping and cleaning of cargo tanks

B.increase the rate of discharge of cargo

C.force toxic and explosive fumes from a cargo tank to vent to the outside atmosphere

D.lower the oxygen levels inside cargo tanks, making explosion nearly impossible