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单选题
Water can put out common fires, such as （）.
A
wood，paper
B
textile
C
A+B
D
oil
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Some villagers were going to celebrate an important wine festival（酒宴）in a few days′time,so?they borrowed a huge barrel from the nearest town,put it in the village square,and decided that each?of them should empty a bottle of the best wine he had into it,so that there should be plenty at the?feast（宴会）.
One of the villagers thought he would be very clever."If I pour a bottle of water in,instead of?wine,no one will notice it,"he said to himself,"because there will be so much excellent wine in the?barrel that?the water will be lost in it."
The night of the feast arrived.Everybody gathered in the village square with their bowls and?their glasses for the wine.The tap（塞子）on the barrel was opened,but what came out was pure?water.Everyone in the village had had the same idea.
The underlined sentence"the water will be lost in it"can be considered as__________.A.the water would be gone in the barrel
B.the water couldn't be found in the wine
C.the water would flow through the barrel into the ground
D.the water would be mixed up with the wine
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When a repeating timer expires,（）.A、The When-Timer-Expired trigger resets the timer's iteration parameter. B、The When-Custom-Item-Event trigger fires and executes the desired actions. C、It is put in a queue of expired timers for processing on a first-in-first-out basis. D、The When-Timer-Expired trigger fires instantly regardless of any other processing in the form module.
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单选题What is an advantage of using foam in fire fighting?（）A
It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)B
Most foams can be used with dry chemicals to attack a fire by two methodsC
Foam is effective on combustible metal firesD
Foam can be made with seawater or fresh water
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单选题Which of the following is true according to the passage?A
Not all the fires in the forests must be put out.B
People‘s carelessness leads to dangerous fires.C
Australia allows all the fires to burn naturally.D
There are more fires in Russia than in the USA.
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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
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单选题All classes of fires can be safely combated using（）A
foamB
CO2C
low velocity water fogD
high velocity water fog
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单选题（）can not cause oil flow from water outlet of self-cleaning separator.A
Oil temperature too highB
Diameter of gravity disc too largeC
Oil temperature too lowD
High level tank out of water
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单选题Class A fires are best extinguished by quenching or cooling with （）.A
deprival of oxygenB
a water sprayC
soda-acidD
foam
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单选题The primary method by which water spray puts out fires is by（）.A
removing the oxygenB
cooling the fire below the ignition temperatureC
removing combustible materialD
diluting combustible vapors
考题
单选题When a repeating timer expires,（）.A
The When-Timer-Expired trigger resets the timer's iteration parameter. B
The When-Custom-Item-Event trigger fires and executes the desired actions. C
It is put in a queue of expired timers for processing on a first-in-first-out basis. D
The When-Timer-Expired trigger fires instantly regardless of any other processing in the form module.
考题
单选题What is the main idea of Paragraph 4?A
Fires are serious threats to human beings.B
Australian firefighters don‘t put out fires.C
Fires can play an important role I forests.D
It‘s difficult for firefighters to control the fires.
考题
单选题As for an oil-fired boiler if at a normal steaming condition and water goes out of sight in gauge glasses the action you should take is: （） (1) secure oil to fires (2) increase feed pump pressureA
（1）B
（1）and（2）C
（2）D
neither（1）nor（2）
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