25. Which valve is used to relieve excess pressure in all pressure vessels
including evaporator and in steam lines?
(A) Relief valve
(B) Gate valve
(C) Butterfly valve
(D) Angle valve
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統計: A(65), B(25), C(5), D(7), E(0) #1445491
統計: A(65), B(25), C(5), D(7), E(0) #1445491