默认题库 - 燃烧与爆炸

单选题

On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.

A. minimum oxygen content line
B. critical displacement line
C. critical dilution line
D. upper threshold limit

单选题

If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.

A. see the medic immediately
B. spray himself with foam or CO<sub>2</sub>
C. complete his task and then see the medic
D. remove the clothing and wash

查看答案

单选题

Each hand portable fire extinguisher must be marked with（）.

A. the name of the vessel on which it is located
B. the date that it was installed
C. the names of the individuals qualified to use it
D. an identification number

查看答案