A.Lowering the boomB.Raising the boomC.Spotting the boo……

单项选择题What danger is presented if a waterspout passes over a ship?（）

A.Heavy rains could cause downflooding
B.Visibility could be restricted by low clouds
C.Large waves could cause structural damage
D.Personnel may be injured by loose deck gear blown by the wind

单项选择题What（）to him is whether the job of a deck officer allows him to pursue his studies.

A.matters
B.happens
C.refers
D.applies

单项选择题To warp a vessel means to（）.

A.anchor the vessel
B.bring the head into the wind
C.clean the decks
D.move the vessel by hauling on lines

单项选择题The usual method of arranging a line on deck so that it will run out easily without kinking or fouling is（）.

A.coiling the line
B.faking down the line
C.flemishing the line
D.racking the line

单项选择题The tweendecker has（）below the main deck.

A.another deck
B.two other decks
C.no deck
D.additional deck