单项选择题

Using an inert gas system on a tanker has which advantage(s)? （）

A.Provides for faster loading
B.Lowers oxygen content in the tank
C.Provides better fuel economy
D.All of the above

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单项选择题

Upon arrival at the discharging port，the inert gas system is（）.

A.turned on
B.turning on
C.turn on
D.to turn on

单项选择题

Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall（）the system in accordance with the requirements of that Regulation.

A.operate
B.check
C.install
D.overhaul

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