航海英语海上消防单项选择题每日一练(2018.10.23)

单项选择题
A spring line is（）.
A.any wire rope used for mooring
B.a fire-warp
C.a mooring line running diagonally to the keel
D.a mooring line perpendicular to the keel
单项选择题
As compared to carbon dioxide，dry chemical has which advantage?（）.
A.Cleaner
B.Effective on metal fires
C.Greater range
D.More cooling effect
单项选择题
Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
A.fireman's outfit
B.low-velocity spray applicator
C.marine strainer
D.pick axe
单项选择题
How is the external flotation bladder of an immersion suit inflated?（）
A.It is inflated by a small CO₂ bottle that is automatically tripped when the front zipper is at the top of the zipper track
B.It is inflated by a small CO₂ bottle that is manually tripped
C.It is inflated by blowing through an inflation tube
D.It inflates by sea water bleeding into the flotation bladder and reacting with a chemical therein
单项选择题
A fire starts on your vessel while refueling. You should FIRST（）.
A.stop the ventilation
B.sound the general alarm
C.determine the source of the fire
D.attempt to extinguish the fire