單項(xiàng)選擇題

Oil fires are best extinguished by（）.

A.cutting off the supply of oxygen
B.removing the fuel
C.cooling below the ignition temperature
D.spraying with water

你可能感興趣的試題

Multiple fire pumps may be used for other purposes provided that one pump is（）.

A.on line to the fire main
B.kept available for use on the fire main at all times
C.capable of being connected to the fire main
D.rated at or above 125 psi

單項(xiàng)選擇題

Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces，such as in a 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

Oil fires are best extinguished by（）.

你可能感興趣的試題

Multiple fire pumps may be used for other purposes provided that one pump is（）.

Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces，such as in a pumproom，provided that the（）.

Large volumes of carbon dioxide are safe and effective for fighting fires in enclosed spaces，such as in a pumproom，provided that the（）.