阿摩線上測驗
53______are designed to supply a large volume of water quickly to the protected area.
(A)Deluge sprinkler systems
(B)Wet-pipe sprinkler systems
(C)Dry-pipe sprinkler systems
(D)Residential sprinkler systems
答案：登入後查看
統計： A(47), B(43), C(4), D(12), E(0) #1200269
統計： A(47), B(43), C(4), D(12), E(0) #1200269
