海船船员考试
单选题Halon from extinguishers used on a class B fire，should be directed（）.A at the top of the flamesB at the base of the fire near the edgeC in short quick burstsD toward the upwind side of the fire
题目
at the top of the flames
at the base of the fire near the edge
in short quick bursts
toward the upwind side of the fire
相似问题和答案
第1题：
To determine the number of portable fire extinguishers required on an inspected vessel，you should check the ______.
A.hot work permit
B.Certificate of Inspection
C.Safety of Life at Sea Certificate
D.station bill
第2题：
Which of the following is a class A fire?下列哪一项是A类火灾（）
- A、Halon 卤化烃(二氟二氯甲烷)
- B、electrical 电气类
- C、liquid 液体类
正确答案:D
第3题：
When will the fire department come to conduct a fire prevention inspection in our company?
A. Next month. I’ve checked hydrants and fire-extinguishers on each floor
B.Next day. The manager will check hydrants and other equipment in the building.
C.Next week. But hydrants and fire extinguishers on each floor has already been checked
D.The day before yesterday. I had already checked hydrants and fire extinguishers on each floor.
第4题：
Fires in electrical equipment
Flammable oils and greases
Class A fires in ordinary combustibles
Materials containing their own oxygen
第5题：
An administrator sees that smoke is coming from the UPS. Which of the following should they doFIRST？（）
- A、Use a Class A fire extinguisher.
- B、Evacuate personnel.
- C、Install additional fans in the UPS
- D、Backup the servers.
正确答案:B
第6题：
All portable fire extinguishers must be capable of being ______.
A.carried by hand to a fire
B.carried or rolled to a fire
C.recharged in the field
D.used on class “B” fire
所有便携式灭火器必须能够被用手携带到火灾（现场）。
第7题：
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.
- A、common
- B、oil
- C、electrical
- D、chemical
正确答案:B
第8题：
Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．
A.fire-extinguishing medium
B.a standard fire test
C.a non-combustible material
D.a fire main
第9题：
You work as the application developer at Certkiller .com. Certkiller .com uses Visual Studio.NET 2005 as its application development platform.You are developing a .NET Framework 2.0 application used to store a type-safe list of names and e-mail addresses. The list will be populated all at ones from the sorted data which means you well not always need to perform insertion or deletion operations on the data. You are required to choose a data structure that optimizes memory use and has good performance.What should you do？（）
- A、 The System.Collections.Generic.SortedList class should be used
- B、 The System.Collections.HashTable class should be used
- C、 The System.Collections.Generic.SortedDictionary class should be used
- D、 The System.Collections.SortedList class should be used
正确答案:A
第10题：
displacement of oxygen
skin irritation
inhaling toxic vapors
eye irritation