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单选题
The primary danger in helicopter fires is（）.
A
burning jet fuel running on to quarters or other areas
B
loss of stability
C
rotating and flying debri
D
heat damage to helicopter structure
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The Smokey Bear(护林熊) fire prevention program has resulted in a savings of $20 billion on all federal(联邦的), state and private forested land(私有林地). In 1941, 208,000 forest fires burned 30 million acres, while in 1981, fewer than 165,000 fires burned about three million acres. While forest usage has increased, the proportion(比例) of human-caused fires has remained stable; people still cause nine out of ten forest fires. But the biggest cause of fires is arson(纵火), accounting for(引起) 34 percent of forest fires in 1981.1. According to the passage, use of forested land has ____.A、stabilizedB、been privatizedC、decreasedD、risen2. According to the passage, in 1941 forest fires burned ____.A、less acres than in 1981B、3 million acresC、ten times as many acres as in 1981D、20 million acres more than in 19813. According to the passage, the number of human-caused fires ____.A、has remained the same proportionatelyB、has increasedC、is the same as the arson casesD、accounts for 34 per cent of forest fires4. According to the passage, which of the following statements is true?A、Nine out of ten fires are caused by arsonists.B、The Smokey Bear program has saved the nation a lot of money.C、There are more forest fires now than before.D、People do not use the forests as much as they did in the past.5. It may be inferred from the passage that ____.A、the majority of fires are caused by humansB、arson is increasing every yearC、more acres are destroyed by fire each yearD、fewer people are using the forests
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The primary danger in helicopter fires is ______.A.burning jet fuel running on to quarters or other areasB.loss of stabilityC.rotating and flying debrisD.heat damage to helicopter structure
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The lifeboat releasing gear lever should be marked with the words ______．A.DANGER，DO NOT TOUCHB.DANGER，BOAT MAY DROPC.DANGER，LEVER RELEASES BOATD.DANGER，LEVER DROPS BOAT
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When a patient is suspected of having appendicitis，the primary action is to ______．A.Give the patient a laxative to relieve painB.Give the patient morphine sulfate to relieve painC.Confine to bed until helicopter arrivesD.Give the patient aspirin with a glass of water
考题
In the sky，the helicopter tumed at an() angle before righting itself.
A. unhealthy
B. awful
C. cruel
D. Unnecessary
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What kind of （）can be used for gas and chemical fires?A、equipmentB、apparatusC、extinguishersD、machines
考题
Which two statements are true about the primary key constraint in a table？ （）A、It is not possible to disable the primary key constraint.B、It is possible to have more than one primary key constraint in a single table.C、The primary key constraint can be referred by only one foreign key constraint.D、The primary key constraint can be imposed by combining more than one column.E、The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
考题
单选题A small fuel spillage has occurred during helicopter refueling. After the leak has been stopped and fire-control personnel have been notified and are standing by，the next step is to（）.A
proceed with fueling operationB
have helicopter move to a safer locationC
wash spilled fuel away with a flood of waterD
clean spilled fuel with rags
考题
单选题Halon fire extinguishers are NOT effective when used on which types of fires?（）A
Fires in electrical equipmentB
Flammable oils and greasesC
Class A fires in ordinary combustiblesD
Materials containing their own oxygen
考题
单选题How must each storage tank for helicopter fuel on a ship be marked?（）A
DANGER - KEEP AWAYB
DANGER - EXPLOSIVE VAPORSC
DANGER - NO SMOKINGD
DANGER - FLAMMABLE LIQUID
考题
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.
考题
单选题Which statement is TRUE concerning the danger signal?（）.A
When any vessel fails to understand the intentions of an approaching vessel she must sound the danger signalB
Only the stand-on vessel can sound the danger signalC
Distress signals may be used in place of the danger signalD
The danger signal consists of 4 or more short blasts of the whistle
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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A helicopter making a round trip from a helideck with refueling capabilities to an unmanned platform will take 45 minutes each way. The helicopter should be carrying enough fuel to last（）.A
45 minutesB
1 hour and 15 minutesC
1 hour and 30 minutesD
2 hours
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单选题When the whole area was _____ by the flood, the government sent food there by helicopter.A
cut awayB
cut upC
cut downD
cut off
考题
单选题Fires involving combustible metals are classified as （）.A
class A firesB
class B firesC
class C firesD
class D fires
考题
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
多选题Which two statements are true about the primary key constraint in a table？ （）AIt is not possible to disable the primary key constraint.BIt is possible to have more than one primary key constraint in a single table.CThe primary key constraint can be referred by only one foreign key constraint.DThe primary key constraint can be imposed by combining more than one column.EThe non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.
考题
单选题When evacuating a seaman by helicopter lift，which course should the ship take?（）A
Downwind so that the apparent wind is close to nilB
A course that will keep a free flow of air，clear of smoke，over the hoist areaC
A course that will have the hoist area in the lee of the superstructureD
With the wind dead ahead because the helicopter is more maneuverable when going into the wind
考题
单选题The only type of helicopter that may be refueled with the engine running and the blades turning is（）.A
a helicopter carrying cargo onlyB
a turbine-equipped helicopterC
a SikorskyD
a helicopter carrying injured personnel in an emergency situation
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The pilot succeeded in ______ the helicopter______ the cliff.A
stopping; atB
mending; inC
flying; onD
landing; on
考题
单选题Why did Russia have so many fires in one month in 2010?A
Because lightening spread the fire.B
Because there was much fuel for fires.C
Because there were not enough firefighters.D
Because it was unusually hot, dry and windy.
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