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单选题 When approaching a fire from windward, you should shield firefighters from the fire by using_____
学科：轮机英语
时间：2023-12-22 07:09:32
题目1单选题
For a fire to begin there must be present a combustible material, oxygen or air to ______ combustion, and a source of heat at a temperature high enough to start combustionA. beginB. supportC. lastD. extinguish
题目2单选题
The usual method of effectively applying foam on a fire is by ______A. spraying directly on the base of the fireB. flowing the foam down a vertical surfaceC. sweeping the fire before you use the foamD. spraying directly on the surface of the fire
题目3单选题
The most important characteristic of a fire extinguishing agent to be used on electrical fires is for the agent to be ______A. non-conductingB. flame resistantC. easily removableD. wet
题目4单选题
The fire drill must, as far as practicable, be conducted if ______A. there is a minor emergencyB. there is an actual emergencyC. there were a minor emergencyD. there were an actual emergency
题目5单选题
However fast or slow the combustion rate, it is still a ______ between carbon, hydrogen, sulphur and oxygen that releases heatA. physical deformationB. state exchangeC. chemical reactionD. coalescence
题目6单选题
Water can't be used to put out fires of _____A. Class AB. Class BC. Class CD. B+C
题目7单选题
The installation and provision of fire fighting equipment is mainly subject to ______A. ISM codeB. ISPS codeC. IBC codeD. FSS code
题目8单选题
The SOLAS convention prescribes that in the fire fighting drill the duty engineer should start the pump and supply deck water in _______minute(s)A. 5B. 3C. 2D. 1
题目9单选题
Which one of three elements for a fire on a tanker vessel is most difficult to eliminate (isolate)A. a combustible element, fuelB. energy (resources for ignition) to start the combustionC. oxygen to support the combustionD. both A and C are correct
题目10单选题
Aqueous Film Forming Foam (AFFF), commonly known as 'light water', is especially suitable for fighting ____A. oil fires in the engine room bilgesB. class B fires in paint lockersC. any class D fireD. all of the above