你可能感興趣的試題

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

單項選擇題

Butadiene，inhibited，is labeled as a（）.

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

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

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

你可能感興趣的試題

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

Butadiene，inhibited，is labeled as a（）.

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

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

Butadiene，inhibited，is labeled as a（）.