A.Water fog
B.Carbon dioxide
C.Dry chemical
D.Solid stream of water
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A.cutting off supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water
A.vertical position
B.horizontal position
C.boom stop angle
D.minimum radius angle
A.reading the gage pressure
B.weighing the extinguisher
C.discharging a small amount of CO2
D.seeing if the seal has been broken
A.transverse moment
B.vertical moment
C.righting moment
D.inclining moment
A.auxiliary guys
B.extra fair leads
C.steel bands
D.stops
最新試題
The company should establish and maintain procedures to control all documents and date which are relevant to（）.
Despite the rising importance and great convenience of the gyrocompass,the magnetic compass still retain its importance because of its（）.
Before any loading takes place any signs of the previous cargo should do（）.
According to the relevant regulation, lifeboat should be powered by（）.
The circulation around a low pressure center in the Northern Hemisphere is（）.
It is dangerous for vessels without the operational radar（）the estuary.
When steering by autopilot,how often should the steering be checked?（）
ECDIS must be able to perform all of the following EXCEPT（）.
The mean draft of a ship is the draft（）.
Manoeuvring information can not be obtained from（）.