_ Medium viscosity lubricating oil can be most ideally pumped by a ___

1.	_ Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.$?
A.	Vane
B.	Piston
C.	Centrifugal
D.	Plunger
Answer» B. Piston

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_ Medium viscosity lubricating oil can be most ideally pumped by a __________ pump.$?

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