海船船员考试
单选题A high-velocity fog stream can be used in fire fighting situations to drive heat and smoke ahead of the fire fighters in a passageway. This technique should only be used when（）.A using a 2-1/2 inch hoseB there is an outlet for the smoke and heatC the f
题目
using a 2-1/2 inch hose
there is an outlet for the smoke and heat
the fire is totally contained by the ship's structure
at least two fog streams can be used
参考答案和解析
相似问题和答案
第1题：
The high-velocity fog tip used with the all-purpose fire fighting nozzle should always be ______．
A.Attached by a chain
B.Coated with heavy grease to prevent corrosion
C.Painted red for identity as emergency equipment
D.Stored in the clip at each fire station
第2题：
Chief, the （）(灭火队)is ready.
- A、fire bucket party
- B、fire boat
- C、fire engine
- D、fire-fighting party
正确答案:D
第3题：
PULL THE STRINGS AROUND YOUR WAIST AND TIE IN FRONT. This description is likely used in ______.
A.fire fighting operations
B.salvage operations
C.cargo operations
D.manoeuvering operations
围绕你的腰部拉根绳索，并在前面打结。
第4题：
shield fire fighters from radiant heat
break up burning material
get the most water possible on the fire
drive heat and smoke ahead of the fire fighters
第5题：
Shutting off electricity to damaged cables
Pumping fire-fighting water overboard
Maneuvering the vessel so the fire is on the lee side
Removing burned debris from the cargo hold
第6题：
Where do you post your （）(火势控制图)?
- A、fire control plan
- B、fire control
- C、fire plan
- D、fire-fighting plan
正确答案:A
第7题：
Which of the following statements are true？ （）
- A、 RC4 is a stream cipher
- B、 Stream ciphers require padding
- C、 AES is a block cipher
- D、 DES and 3DES are stream ciphers
- E、 AES is a stream cipher
- F、 AES， DES， and 3DES can be used as HMAC algorithms
正确答案:A,C
第8题：
If a firefighting situation calls for low-velocity fog you would ______．
A.order the engine room to reduce pressure on the fire pump
B.put the lever on an all-purpose fire nozzle all the way forward
C.attach a low-velocity fog applicator with the nozzle shut down
D.put the lever on an all-purpose fire nozzle all the way back
第9题：
order the engine room to reduce pressure on the fire pump
put the lever on an all-purpose fire nozzle all the way forward
attach a low-velocity fog applicator with the nozzle shut down
put the lever on an all-purpose fire nozzle all the way back
第10题：
generators
oil drums
the bridge controls
combustible metals