阿摩線上測驗
4. What equipment is used to relieve excess pressure. It only fitted on top of boiler and prevents
pressure to excess in boiler?
(A) Quick closing valve
(B) Relief valve
(C) Globe valve
(D) Safety valve
答案：登入後查看
統計： A(45), B(210), C(54), D(534), E(0) #1359032
統計： A(45), B(210), C(54), D(534), E(0) #1359032
