阿摩線上測驗
20. The main function of equipment is adjusting pressure, temperature and flow of fluid. What
equipment is above description?
(A) Relief valve
(B) Regulating valve
(C) Reducing valve
(D) Needle valve
答案：登入後查看
統計： A(164), B(734), C(141), D(103), E(0) #2333278
統計： A(164), B(734), C(141), D(103), E(0) #2333278
