更多"[单选题]Water Fire Extinguisher的使用时间是_"的相关试题:
[单选题]Water Fire Extinguisher的使用时间是______。
A.40秒
B.10秒
C.8秒
D.30秒
[单选题]Halon Fire Extinguisher的使用时间是_______秒。
A.8
B.9
C.10
D.11
[单选题] HALON FIRE.EXTINGUISHER是指: ( )
A.海伦灭火瓶
B.干粉化学灭火瓶
C.二氧化碳灭火瓶
D.水灭火瓶
[单选题] We test the water spray fire protection system of fire-protected lifeboats every 3 months, ___the abandon ship drill.
A. combining with
B. combined with
C. combining to
D. combined to
[单选题] _______ ，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
[单选题] What is an advantage of water fog or water spray over a straight stream of water in fighting an oil fire ________．
A.It has a smothering effect on the fire
B.It requires less water to remove the same amount of heat
C.It gives more protection to fire fighting personnel
D.All of the above
[单选题] _______ water is the water in the hold to keep the ship’s stability.
A. Bilge
B. Ballast
C. Slop
D. Sanitary
[判断题]天空内饰飞机手电筒使用时间3.4小时，传统内饰飞机手电筒使用时间4.2小时。
A.正确
B.错误
[判断题]综合额度的申请和使用时间必须在中心额度的有效期限内，单一额度的申请和使用时间必须在对应种类综合额度和中心额度的有效期限内。
A.正确
B.错误
[单选题]7.综合额度的申请和使用时间必须在中心额度的有效期限内单一额度的申请和使用时间必须在对应种类综合额度和中心额度的有效期限内。( )
A.正确
B.错误
[判断题]机上手提式海伦灭火器的使用时间大约为8-10秒钟，水灭火器的使用时间大约为40秒。
A.正确
B.错误
[单选题] Portable fire extinguishers must be provided for the cargo tank area of an unmanned tank barge ______.
A. only when fully loaded
B. if one or more tanks are full
C. when transferring cargo
D. only when the barge is being towed
[单选题]车轴的使用时间自（ ）时间开始计算，当首次组装时间不明时，以车轴制造时间为准。
A.车轮制造
B.车轴制造
C.轮对首次组装
D.轮对末次组装
[单选题]The certificate of fire extinguishing will expire soon,you'd better extend its
A.life
B.qualification
C.limit
D.validation
