题目内容
（请给出正确答案）
A fire pump may be used for other purposes if ______.
A.the other services are run off a reducing station with a pressure gage
B.one of the required pumps is kept available for use on the fire main system at all times
C.no relief valves are installed
D.all of the above conditions are met
简答题官方参考答案
（由简答题聘请的专业题库老师提供的解答）
更多“A fire pump may be used for other purposes if ______.A.the other services are run off a re”相关的问题
听力原文： Many of the innovations in fire fighting that we will be seeing today were developed right here in America. As you can see from these photos, one of the earliest steam powered fire engines, the Joe. Ross, was built in 1850 and operated right here in Cincinnati. Driven by four large horses, the ten-ton machine was steered by a single front wheel that was attached directly to the horse team. The steam motor on the Joe Ross was used to power the water pump that the big machine used to fight fires.
Over here, we have an actual truck which was built in 1900 by the Waterbus Fire Engine Works of Minneapolis. This was the very first fire engine to utilize a single steam motor for pulling the engine as well as pumping the water. As you may notice at the top of the truck, there is a circular platform. that holds one end of a long ladder. The revolving platform. operates almost like a record turntable in order to make it easier for ladder operators to access buildings from difficult angles. The idea of the ladder turntable is credited to a San Francisco fireman by the name of Daniel Hayes. Hayes' lifesaving invention, when combined with the relatively quick response time of the single engine, helped to bring fire fighting into the modern era.
(30)
A．Urban fires
B．American fire fighting innovations.
C．The history of fire.
D．The Great San Francisco Fire.
____ belongs to emergency power supplying equipments.
A.Emergency fire pump
B.Windlass
C.Main sea water pump
D.Fresh water pump
A.insulate your shoes
B.ground the fire hose
C.secure its power supply
D.start the fire pump
To operate a centrifugal fire pump at reduced capacity, you should _____.
A.readjust the relief valve
B.throttle the suction line
C.throttle the discharge valve
D.open the priming line
A.secure the fuel manifold
B.shut off power to the pump
C.shut off the power ventilation
D.spray water on the fire
When there is a fire in a large electric motor, normally the very FIRST step is to _____.
A.secure the electric supply
B.ventilate area to remove smoke
C.start the fire pump and lead out hose
D.apply foam
A class "B" fire would most likely occur in the _____.
A.main switchboard
B.engine room bilge
C.breathing compartment
D.electric fresh water transfer pump
The Robogat is designed to pump water ______.
A．at a speed of 500 liters a minute
B．almost as fast as an airport tender
C．six times faster than an ordinary fire-engine
D．at a rate of an airport fire tender
A.start the fire pump to charge the fire main
B.standby the main console and await orders from the engineer on watch
C.go to your fire station
D.go to your lifeboat station
A.kept as a secret
B.avoided any operation
C.adjusted ballasting
D.noted on board and take naction to arrange alternatives
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“简答题”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
