At each drill a different person should be in ()(负责)of an extinguisher.
A portable foam fire extinguisher is placed in operation by()
Upon the completion of required tests, a () should be placed on each extinguisher, showing the date and the person who completed the tests.
A carbon dioxide fire extinguisher has been partially discharged, and should be immediately ().
A fire extinguisher is used for ()fires.
A carbon dioxide fire extinguisher has been partially discharged, and should be immediately ().
A portable dry chemical fire extinguisher discharges by().
()as the chemical extinguisher agent, should be used for a an electric fire.
A portable foam fire extinguisher is placed in operation by()
Can you tell me how to use the foam extinguisher? ()