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

A． or elseB． butC． thereforeD． however

Go anywhere in the world__________you’II find some sort of fast－food restaurant．A.or###SXB

In the combustion chamber, the part whose surface is exposed to the highest temperature is

After a normal, or safety shutdown, automatic combustion control systems for an auxiliary

What is the book, Thinking, Fast and Slow, mainly about？A．Why people are not that rational

Rapping could be described as speaking or singing words______.A．at a slow speed over music