單項(xiàng)選擇題

A class B fire is most successfully fought by（）.

A.preventing oxygen from reaching the burning material
B.cooling the burning material below its ignition temperature
C.using the extinguishing agent to make the burning material fire-resistant
D.using the extinguishing agent to absorb the heat

你可能感興趣的試題

單項(xiàng)選擇題

A Certificate of Inspection issued to a small passenger vessel describes（）.

A.the mimimum fire extinguishing equipment，lifejackets，survival and rescue craft she must carry
B.the name of the managing operator
C.any special conditions or restrictions on her operation
D.All the above

單項(xiàng)選擇題

A carburetor is required to have a safety device called a(n)（）.

A.pressure release
B.backfire flame arrestor
C.automatic shut off
D.flow valve

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

A class B fire is most successfully fought by（）.

你可能感興趣的試題

A Certificate of Inspection issued to a small passenger vessel describes（）.

A carburetor is required to have a safety device called a(n)（）.

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久