A.Carbon dioxide
B.Distilled water
C.Fresh water
D.Salt water
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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
A.camber
B.sheer
C.rake
D.rise of bottom
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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,（）.
When the pilot is embarked he or she（）.
If in any doubt as to the pilot’s actions or intentions，the officer in charge of the navigational watch shall（）.
Your ship must（）.
You are on watch and the Pilot has the conn.The Master has temporarily gone below.The Pilot orders a course change which you are certain will put the vessel into imminent danger.Your first action should be to（）.
Which fitting is used to connect the boom to the mast? （）
A qualified deck officer should be（）the watch.
Orders of the Master to the officer of the watch which s/he must comply with are（）.
What is the BEST conductor of electricity（）.
What is the function of an air receiver in the compressed air system on a ship? （）