题目内容
(请给出正确答案)
[主观题]
The four basic components of a fire are chain reaction, heat, fuel, and _____.A.carbon mon
The four basic components of a fire are chain reaction, heat, fuel, and _____.
A.carbon monoxide
B.oxygen
C.carbon dioxide
D.any gaseous substance
提问人:网友marysnow
发布时间:2022-01-06