A.sound signal
B.light signal
C.visual signal
D.radiotelephone
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A.icebreaker support is finished
B.icebreaker support is commencing
C.the icebreaker is icebound
D.the icebreaker is beset
A.I am altering my course to starboard
B.I am altering my course to port
C.I am operating astern propulsion
D.My vessel is stopped and making no way through the water
A.Bruce anchor
B.Dunn anchor
C.Hook anchor
D.Danforth anchor
A.naphtha，vm and p
B.tridecanol
C.cottonseed oil
D.camphor oil
A.piperyline
B.motor gasoline
C.kerosene
D.mineral spirits
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An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
All personnel on board a vessel should be familiar with the rescue boat’s（）.
Explosive and flammable gasses are most likely to be encountered on a vessel（）.
An advantage of the Christmas Tree towing method is to（）.
An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.
An example of an anchor which has a stock is a（）.
Air circulation is caused or affected by（）.
In respect of carrier’s liabilities，responsibilities，rights and immunities the（）contained in the International Convention for the Unification of Certain Rules Relating to Bills of Lading，signed at Brussels on August 25，1924，shall be applied.