单项选择题
A contra-guide is a type of（）.
A.bow thruster
B.cargo gear
C.steering engine
D.rudder
点击查看答案&解析
相关考题
-
单项选择题
A dead reckoning (DR) plot（）.
A.must utilize magnatic courses
B.must take set and drift into account
C.should be replotted hourly
D.should be started each time the vessels position is fixed -
单项选择题
A deck fitting, used to secure line or wire rope, consisting of a single body with two protruding horns is called a（）.
A.bitt
B.bollard
C.capstan
D.cleat -
单项选择题
A deepwell pump is a type of（）.
A.screw pump
B.centrifugal pump
C.eductor
D.gear pump
