海船船员考试
单选题A portable dry chemical fire extinguisher discharges by（）.A gravity when the extinguisher is turned upside downB pressure from a small CO2 cartridge on the extinguisherC air pressure from the hand pump attached to the extinguisherD pressure from the re
题目
gravity when the extinguisher is turned upside down
pressure from a small CO2 cartridge on the extinguisher
air pressure from the hand pump attached to the extinguisher
pressure from the reaction when water is mixed with the chemical
相似问题和答案
第1题：
Which statement concerning the application of dry chemical powder is FALSE ________．
A.At temperatures of less than 32℉，the extinguisher must be recharged more often
B.When possible，the fire should be attacked from windward
C.The stream should be directed at the base of the fire
D.Directing the stream into burning flammable liquid may cause splashing
第2题：
A portable dry chemical fire extinguisher discharges by ______.
A.gravity when the extinguisher is turned upside down
B.pressure from a small CO2 cartridge on the extinguisher
C.air pressure from the hand pump attached to the extinguisher
D.pressure from the reaction when water is mixed with the chemical
便携式干粉灭火器通过灭火器内二氧化碳小气瓶的压力来排放药剂。
第3题：
Which of the following is (are)an advantage of a dry chemical extinguisher over a carbon dioxide extinguisher？The dry chemical extinguisher：Ⅰ．Has a greater range．Ⅱ．Provides a heat shield for the operator．
A.Ⅰonly
B.Ⅱonly
C.Both Ⅰand Ⅱ
D.Neither Ⅰ nor Ⅱ
第4题：
Fire in the cabins. Close all fire doors and use the （）powder extinguisher.
- A、dry
- B、wet
- C、foam
- D、portable
正确答案:A
第5题：
An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.
A.greater range
B.effectiveness on all types of fires
C.cleanliness
D.All of the above
干粉灭火器优于CO2灭火器的优点是它更远的作用距离。
第6题：
______, as the chemical extinguisher agent, should be used for an electric fire.
A.dry chemical or foam
B.foam or soda acid
C.carbon dioxide or foam
D.carbon dioxide or dry chemical
二氧化碳或干粉灭火器作为化学灭火器，用于扑灭电器火灾。
第7题：
An ABC dry chemical fire extinguisher would be LEAST effective against a fire in ______.
A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can
干粉灭火机对席子着火的扑救效果最差。
第8题：
Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?
A.Test the pressure gauge for correct reading
B.Weigh the cartridge
C.Replace the dry chemical
D.Pressure test the discharge hose
第9题：
An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.
A.lack of toxicity
B.the multipurpose extinguishing ability
C.burn-back protection
D.cooling ability
ABC干粉灭火器较二氧化碳灭火器时一个多功能灭火器。
第10题：
Close all fire doors and use the （）（干粉灭火器）.
- A、dry powder extinguisher
- B、foam extinguisher
- C、CO2 extinguisher
- D、portable extinguisher
正确答案:A