阿摩線上測驗
14. What equipment is used to relieve excess pressure in all pressure
vessels including evaporator and in steam, water, oil, and air line?
(A) Throttle valve
(B) Relief valve
(C) Globe valve
(D) Quick closing valve
答案：登入後查看
統計： A(37), B(356), C(81), D(39), E(0) #1333500
統計： A(37), B(356), C(81), D(39), E(0) #1333500
