However fast or slow the combustion rate it is still a ______ between carbon hydrogen s

职业资格 已帮助 人

However fast or slow the combustion rate, it is still a ______ between carbon, hydrogen, sulphur and oxygen that releases heat.

A.physical deformation

B.state exchange

C.chemical reaction

D.coalescence

请帮忙给出正确答案和分析,谢谢!

热搜:get big fast模式和火箭发射模式