Portable carbon dioxide fire extinguishers should be sent ashore to be recharged （）.
1、When used to fight fire，carbon dioxide
When used to fight fire，carbon dioxide（）.Ais effective if used promptly on an oil fireBhas a greater cooling effect than waterCis lighter than airDis harmless to cargo and crew
2、Controls for a fixed carbon dioxide sy
Controls for a fixed carbon dioxide system shall be mounted（）.Adirectly outside the space protected by the systemBas near the gas cylinders as possibleCin the pilothouseDon the main deck near the bow
3、A carbon dioxide fire extinguisher has
A carbon dioxide fire extinguisher has been partially discharged, and should be immediately （）.Atagged and restowed properly in its rackBweighed...
4、As compared to carbon dioxide，dry chem
As compared to carbon dioxide，dry chemical has which advantage?（）ACleanerBEffective on metal firesCGreater rangeDMore cooling effect
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
6、Carbon dioxide flooding system is used
Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to（）.Aflashing pointBcombustion pointCauto-ignition pointDlower explosive limit