单项选择题
The purging of air from an elector-hydraulic steering gear unit is necessary when（）
A.changing over to hand pump operation
B.engaging the trick wheel
C.the system has been filled with new oil
D.the rudder angle indicator does not match the helm position
点击查看答案&解析
相关考题
-
单项选择题
If a severe leak develops in the electro-hydraulic steering gear unit is necessary when（）
A.Loss of vessel steering
B.Overheating of the gyrocompass
C.Jamming of the six-way vale
D.Jamming of the follow-up device -
单项选择题
A power failure in the hydraulic system of a compact type steering gear would cause the rudder to（）
A.swing 35°right or left
B.remain locked in its last position
C.move to the mid-ship position automatically
D.jam against the rudder emergency stops -
单项选择题
According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 12 knot service speed, must be able to meet the rudder movement requirements at which of the minimum vessel speeds listed below?（）
A.6 knots
B.7 knots
C.9 knots
D.12 knots
