单项选择题
Sideways movement of the mast is resisted by the（）.
A.shrouds
B.halyards
C.sheets
D.forestay
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相关考题
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单项选择题
Reducing free surfaces has the effect of lowering the（）.
A.uncorrected KG
B.virtual height of the center of gravity
C.metacenter
D.metacentric height -
单项选择题
On which vessels are the officers and deck crew allowed to operate under a two-watch system on voyages of less than 600 miles? （）
A.Towing vessels
B.Offshore supply vessels
C.Barges，when manned
D.All of the above -
单项选择题
Maritime Administration personnel may be allowed in the pilothouse upon the responsibility of the（）.
A.Chief Officer
B.Navigator
C.most senior person present from the Maritime Administration
D.officer in charge of the watch
