更多"As compared to carbon dioxide，dry c"的相关试题:
[单项选择]As compared to carbon dioxide，dry chemical has which advantage?（）
A. Cleaner
B. Effective on metal fires
C. Greater range
D. More cooling effect
[单项选择]A carbon dioxide fire extinguisher has been partially discharged, and should be immediately （）.
A. tagged and restowed properly in its rack
B. weighed and the charge loss recorded
C. given to the chief engineer for recharging
D. tagged "empty" and stowed separately from charged extinguishers
[单项选择]Carbon dioxide as a fire fighting agent has which advantage over other agents? （）
A. It causes minimal damage
B. It is safer for personnel
C. It is cheaper
D. It is most effective on a per unit basis
[单项选择]Portable carbon dioxide fire extinguishers should be sent ashore to be recharged （）.
A. when the remaining charge volume is less than 90 percent of the required VOLUME
B. at each inspection for certification
C. at each annual inspection
D. when the weight loss exceeds 10% of weight of charge
[单项选择]The discharge from a carbon dioxide fire extinguisher should be directed（）.
A. at the base of the flames
B. at the center of the flames
C. to the lee side of the flames
D. over the tops of the flames
[单项选择]Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.
A. flashing point
B. combustion point
C. auto-ignition point
D. lower explosive limit
[单项选择]A carbon dioxide fire extinguisher should be recharged（）.
A. at least annually
B. whenever it is below its required weight
C. only if the extinguisher has been used
D. before every safety inspection
[单项选择]The danger associated with using carbon dioxide in an enclosed space is（）.
A. frostbite
B. skin burns
C. asphyxiation
D. an explosive reaction
[单项选择]A fixed carbon dioxide extinguishing system for a machinery space，designed WITHOUT a stop valve in the line leading to the protected space，is actuated by（）.
A. one control
B. two controls
C. three controls
D. none of the above
[单项选择]Carbon dioxide的中文含义是（）。
A. 碳氢化合物
B. 碳氧化合物
C. 一氧化碳
D. 二氧化碳
[单项选择]What is NOT a characteristic of carbon dioxide fire-extinguishing agents?（）
A. Effective even if ventilation is not shut down
B. Will not deteriorate in storage
C. Non-corrosive
D. Effective on electrical equipment
[单项选择]Controls for a fixed carbon dioxide system shall be mounted（）.
A. directly outside the space protected by the system
B. as near the gas cylinders as possible
C. in the pilothouse
D. on the main deck near the bow
[单项选择]Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed space, such as in the pumproom, provided that the（）.
A. persons in the space wear gas masks
B. persons in the space wear damp cloths over their mouths and nostrils
C. ventilation system is secured and all persons leave the space
D. ventilation system is kept operating
