当前位置:在线题库搜索>[单选题]Where tanks are arranged for either oil or ballast, () must be fitted in the pipeline.的答案是什么?

问题:

[单选题]Where tanks are arranged for either oil or ballast, () must be fitted in the pipeline.

A、a change-over chest
B、a head tank
C、a emergency bilge pump
D、an air cooler

参考答案: A