单项选择题
A schooner is a fore-and-aft rigged vessel with（）.
A.a single mast
B.two masts: with the mizzen stepped abaft the rudder post
C.two masts: with the mizzen stepped forward of the rudder post
D.at least two masts: a foremast and a mainmast
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A.hoisting a windsail
B.parceling
C.sewing canvas
D.testing canvas -
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A safety feature provided on all inflatable liferafts is（）.
A.overhead safety straps
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单项选择题
A note of protest is a declaration made by the Master of a vessel before a notary public.Its purpose is to（）.
A.Protest acts of violence or misconduct by the vessel's crew
B.State that damage to cargo or vessel was caused by improper loading or pilferage by others rather than ship's personnel
C.State that the damage to ship，cargo or both was due to the perils of the sea
D.State that the perishable cargo was damaged because of negligence by port authorities or other officials
