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单选题
What type of valve is used to direct the flow of hydraulic fluid?（）
A
Relief valve
B
Direction control valve
C
Stop valve
D
Pressure control valve
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考题
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follow-up gear takes the hydraulic pump off stroke
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Balancing valveD
Reducing valve or balancing valve
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lock the oil lines under some conditionsC
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考题
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the bleeder valve sticking in the open positionC
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单选题An axial piston, variable stroke pump is used in a vessels hydraulic steering gearUnder pressure, oil continually leaks out from between the valve plate/cylinder barrel and will（）.A
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maintain a preset pressure on the lineB
closely regulate the amount of flowC
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the temperature of the hydraulic fluidB
the flow rate of the hydraulic fluidC
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Globe valveB
Butterfly valveC
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Packless valve
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