阿摩線上測驗
52 Standpipe systems have been installed in health care facilities for many years to provide______ valves in
enclosed stairs and throughout selected occupied rooms and corridors.
(A)hose
(B)duct
(C)coil
(D)water
答案：登入後查看
統計： A(47), B(49), C(46), D(54), E(0) #1200268
統計： A(47), B(49), C(46), D(54), E(0) #1200268
