30. Desalination plants is also called as _______.
(A) power generators
(B) fresh water generators
(C) heat exchangers
(D) intercoolers
答案:登入後查看
統計: A(111), B(674), C(151), D(75), E(0) #2860353
統計: A(111), B(674), C(151), D(75), E(0) #2860353