单项选择题
A.The oil mist detectors B.The smoke detectors C.An oily water monitor D.Oil discharge monitoring and controlling system
The oil mist detectors continuously（） the crankcase atm...
单项选择题The oil mist detectors continuously（） the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity measuring track.
A.detract B.extract C.pump up D.pump down
（）, the repair in so short a time is unknown to us.A.Ho...
单项选择题（）, the repair in so short a time is unknown to us.
A.How they finished B.How did they finished C.That how they finished D.That how did they finished
Which of the following represents the maximum percent o...
单项选择题Which of the following represents the maximum percent of oxygen by volume required to be achieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing?（）
A.6% B.8% C.10% D.12%
