单项选择题
The remote control for a fixed fire extinguishing system should be（）.
A.painted red and labeled B.concealed from the crew C.protected by plexiglass D.padlocked
单项选择题 The record of tests and inspection of fire fighting equipment on board a ship must include（）.
单项选择题 The primary method by which water spray puts out fires is by（）.
单项选择题 The primary function(s) of an automatic sprinkler system is(are) to（）.
