The gear pump belongs to the （) pump.A.positive displacementB.reciprocatingC.centrifugal

A gear pump belongs to _____ according to its working principle.

A reciprocating pump belongs to _____ according to its working principle.A.injector pumpsB

If a bilge pump is able to develop vacuum, but is unable to sufficiently pump out the bilg

An advantage of a helical gear pump over a simple gear pump is that the helical gear pump

Language belongs to each member of the society, to the cleaner ______ to the professor.[19

The sentence "I apologize! " belongs to the category of______ according to the Speech Act