A.Stem
B.Pin
C.Box
D.Stand
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A.An oxygen indicator
B.A combustible gas indicator
C.A combination combustible gas and oxygen indicator
D.A flame safety lamp
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
最新試題
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.
Which device is designed to automatically hold the load if power should fail to an electric winch?（）
You have orders to drop off a barge loaded with propylene oxide at a fleet.In doing so，you must ensure that（）.
What is the purpose of the limit switch on gravity davits?（）
Which word indicates color variation in the characteristics of a light?（）
A qualified deck officer should be（）the watch.
While the Pilot is maneuvering the vessel to a dock，what is the PRIMARY responsibility of the watch officer?（）
You are on watch and the pilot has just anchored the vessel.The next thing that you should do after the anchor has been let go is to（）.
If at any time the officer in charge of the navigational watch is to be relieved when a manoeuvre or other action to avoid any hazard is taking place,（）.
The officer in charge of the navigational watch shall not hand over the watch to the relieving officer if（）.