A.Provides for faster loadingB.Lowers oxygen content in……

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

单项选择题The purpose of the deck seal in an inert gas system is to prevent（）.

A.flammable vapors from entering machinery space
B.flue gas escaping to atmosphere
C.inert gas escaping to atmosphere
D.air entering inert gas system

单项选择题The purpose of inert gas systems aboard tankers is to（）.

A.allow sufficient oxygen in the tank to sustain life
B.prevent outside air from entering the tank
C.provide more discharge pressure
D.comply with pollution regulations

单项选择题The number or name of a tank barge shall be（）.

A.displayed in at least 4 different positions on the barge
B.carved on a wooden board and attached to the barge's hull
C.displayed as close to the navigation lights as possible
D.displayed at the highest point of the barge's hull such that it can be seen from either side