A.clinometer B.repeater C.panel D.rudder
单项选择题航向记录器()
A. echo sounder B. instrument C. wheel D. course recorder
单项选择题船钟()
A.clock B.telegraph C.engine D.marine clock
单项选择题驾驶员()
A. captain B. chief officer C. chief engineer D. deck officer
单项选择题海图()
A.chart B.map C.mark D.symbol
单项选择题能见度()
A.seeing B.visual C.visibility D.visible