A.couducts electricity
B.should be directed at the base of the fire
C.is most effective on burning gases which are flowing
D.extinguishes by cooling oil fires blow ignition temperature
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A.Cleaner
B.Effective
C.Greater range
D.More cooling effect
A.a not knowing
B.an unknowing
C.an unknown
D.a not known
A.by the toolpusher
B.in the station bill
C.by the person conduction the drill
D.at the previous safety meeting
A.with
B.by
C.on
D.in
A.running rigging leading aft from the masts
B.running rigging leading forward from the masts
C.standing rigging leading aft from the masts
D.standing rigging from the trees to the mast head
最新試題
Where would you find information about the time of high tide at a specific location on a particular day of the year?（）
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（）is halfway between the forward and after perpendiculars and is reference point for vessel construction.
A tide is called diurnal when（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Which of the following shall not the officers in charge of the navigational watch do?（）
When steering by autopilot,how often should the steering be checked?（）
（）is the act of allocating space to containers on board of a container ship in the order of the discharge ports.
The ISM code is part of（）.
According to the relevant regulation, lifeboat should be powered by（）.