你可能感興趣的試題

單項選擇題

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

單項選擇題

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

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（）.

你可能感興趣的試題

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

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

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（）.