停仪表风后下列（）将打开。
A、蒸发回流
B、发烟硫酸调节阀
C、热水系统蒸气阀
D、萃取进料阀
参考答案：A, C
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
A.be damaged
B.work normally regardless of harmful conditions
C.not wok though it is not in a bad condition
油污水舱的作用除了收集污油水外，还可（）污油水。
A、分离
B、排放
C、控制
