A.until each quadrennial PSC inspection
B.until the end of each voyage
C.for a minimum of one year
D.for a minimum of two years
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A.the most common method used in the United States
B.too expensive for common use
C.generally safe to sea life
D.generally harmful to sea life
A.the "snow" which is sometimes discharged along with the gas is toxic
B.prolonged exposure to high concentrations of C02 gas causes suffocation
C.rapid dissipation of the C02 vapor
D.the C02 gas is lighter than air and a large amount is required to extinguisha fire near the deck
A."A" fire
B."B" fire
C."C" fire
D."D" fire
A.Rose box
B.Sea chest or spool piece
C.Sluice valve
D.Fire pump stuffing box
A.class "A" fires
B.class "B" fires
C.class "C" fires
D.class "D" fires
最新試題
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
To proceed to the assistance of a ship in distress is（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Cold weather starting of a diesel engine may be made easier by（）
The condensers located in various stages of a flash evaporator are cooled by（）
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The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.