99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

If emergency welding repairs must be made to the upper area of a fuel tank, the tank and/or adjacent compartments may need to be （）

A.gas freed
B.inerted
C.filled with water
D.all of the above as necessary

你可能感興趣的試題

單項(xiàng)選擇題

Which of the following statements is least likely to cause the ignition of fuel vapors?（）

A.Static electricity
B.An open running electric motor
C.Loose wiring
D.Explosion proof lights

單項(xiàng)選擇題

A burning AC motor would be considered what class of fire?（）

A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"