A、smoke sensors
B、the difference in thermal expansion of two dissimilar metals
C、pressure loss due to air being heated
D、an electric eye which actuates when smoke interferes with the beam
更多“Fire alarm system thermostats are actuated by（）.”相关的问题
A、putting on a fireman's outfit，if the vessel is so equipped B、donning a self-contained breathing apparatus，if the vessel is so equipped C、activating the general alarm and reporting inoperative alarm systems and fire-detection systems D、refilling and servicing all expended fire extinguishing equipment
A、general alarm and fire control plans B、muster stations and duties of individual C、patrol system D、All of the above
A、A.Manual fire detection system B、B.Automatic fire detection system C、C.Smoke detection system D、D.Watchman's supervisory system
客服
TOP
查看正确答案
