单项选择题

The amount of fluid delivered by a reciprocating pump can be regulated by （）.

A.throttling the pressure line
B.changing the speed of the piston
C.either A or B
D.None of the above is tree

点击查看答案&解析

上一题目录下一题

单项选择题

A.throttling the pressure line
B.changing the speed of the rotor
C.either A or B
D.None of the above is tree

单项选择题

A.kinetic；pressure
B.kinetic；essential
C.pressure；kinetic
D.pressure；height

单项选择题

A.throttling the pressure line
B.changing the speed of the rotor
C.either A or B
D.None of the above is tree