單項(xiàng)選擇題

When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.

A.ram relief valves bypass oil to stop rudder movement
B.six-way valve shifts to the neutral flow position
C.steering pump electric motor is de - energized by the transfer switch
D.follow-up gear takes the hydraulic pump off stroke

你可能感興趣的試題

單項(xiàng)選擇題

A swing check valve is used in a pipeline to （）.

A.maintain a preset pressure on the line
B.closely regulate the amount of flow
C.relieve excessive pressure on the line
D.allow flow in one direction only

單項(xiàng)選擇題

Sluggish response or action of the hydraulic actuators may be a result of （）.

A.insufficient load
B.excessively high oil viscosity
C.relief-valve pressure setting too high
D.reservoir level being maintained two inches above normal

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.

你可能感興趣的試題

A swing check valve is used in a pipeline to （）.

Sluggish response or action of the hydraulic actuators may be a result of （）.

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精