单项选择题

Each inert gas system must be designed to supply the cargo tanks with a gas，or mixture of gasses，that has an oxygen content by volume of（）.

A.5% or less
B.10% or less
C.15% or less
D.20% or less

点击查看答案&解析

上一题目录下一题

相关考题

单项选择题

Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.

A.97 times greater
B.94 times greater
C.10 times greater
D.2 times greater

单项选择题

Combustible gas indicators operate by drawing an air sample into the instrument（）.

A.over an electrically heated platinum filament
B.where it is mixed with nitrogen
C.where it is ignited by a sparking device
D.where its specific gravity is measured

单项选择题

Butadiene，inhibited，is labeled as a（）.

A.combustible liquid
B.flammable gas
C.flammable liquid
D.flammable solid