阿摩線上測驗
13.The volume displaced per cycle in the liquid end of a is constant, and is a function of the
outside diameter and stroke length of the liquid piston or plunger.
(A)diaphragm pump
(B)screw pump
(C)reciprocating pump
(D)gear pump
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統計： A(28), B(39), C(202), D(33), E(0) #600731
統計： A(28), B(39), C(202), D(33), E(0) #600731
