【导读】
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1. [单选题]A segregated ballast system is a system where
A. all ballast is processed through the oily water separator
B. ballast is taken on and discharged through a separate main deck
C. ballast and cargo tanks are separated by cofferdams
D. all ballast lines, tanks, and pumps are independent of those used for oil
2. [单选题]油轮上向油舱或机舱内施放的泡沫为______。
A. 高倍泡沫
B. 低倍泡沫
C. 中倍泡沫
D. 发泡倍数20倍以上的泡沫
