题目内容

How many strokes does a single piston pump need to discharge oil?

A. one stroke
B. two strokes
C. three strokes
D. none of the above

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A. radial piston pumps
B. axial piston pump
C. bent axis piston pump
D. all the above

A. use of swash plate
B. application in open loop or closed loop circuit
C. design of bent axis piston pump
D. all the above

A. discharge of oil is maximum
B. discharge of oil is minimum
C. there is no discharge of oil
D. none of the above

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B. radial piston pump
C. axial piston pump
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