A.An oxygen indicator
B.A combustible gas indicator
C.A combination combustible gas and oxygen indicator
D.A flame safety lamp
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A.Carbon dioxide
B.Distilled water
C.Fresh water
D.Salt water
A.keep ports，doors，windows，and hatches closed
B.start engines immediately
C.ventilate before starting engine
D.None of the above
A.not
B.no
C.any
D.none
A.abeam
B.dead astern
C.just forward of the beam on either side
D.on either side of the stern
A.lapped construction
B.strapped construction
C.joggled construction
D.belted construction
最新試題
Which word indicates color variation in the characteristics of a light?（）
When must the Master or person in charge of a ship log the position of load line marks in relation to the surface of the water in the logbook?（）
If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.
You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.
Prior to each voyage the master of every ship shall ensure that the intended route from the port of departure to（）is planned using adequate and appropriate charts and other nautical publications necessary for the intended voyage.
A qualified deck officer should be（）the watch.
The officer in charge of the navigational watch shall not hand over the watch to the relieving officer if（）.
You are a watch standing mate and have come to the bridge to relieve the watch while underway at sea.The watch should not be transferred（）.
What is the BEST conductor of electricity（）.
In determining that the（）of the navigational watch is adequate to ensure that a proper look-out can continuously be maintained，the master shall take into account all relevant factors.