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问题:

[单选] When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?()

A . The six-way valve opens
B . The steering service pump motor is stopped
C . The follow-up gear takes the pump off stroke
D . The cylinder relief valves bypass oil to the suction side the pum

查询客户账户交易明细信息时,若输入的交易结束日期大于当前会计日期,系统会报错。 按生产法计算,净产值应等于()。 总产值+工业中间投入。 总产值-工业中间投入。 总产值×工业中间投入。 总产值÷工业中间投入。 煤炭的质量涉及到的指标有()以及发热量、煤的粘结性和结焦性、煤的热稳定性、煤的燃点以及煤的可选性等。 硫分。 挥发分。 灰分。 水分。 Large quantities of uncovered pig iron or billets should not be carried in the upper-tween decks because(). this does not eliminate the risk of cargo shifting。 this will increase the metacentric height of the ship。 this will decrease the gravity height of the ship。 this will reduce the rolling period of the shi。 简述纱线接捻方法。 When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?()
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