糖彻底氧化供能是通过（）

A．三羧酸循环

B．鸟氨酸循环

C．乳酸循环

D．丙氨酸-葡萄糖循环

E．柠檬酸-丙酮酸循环

The best method of extinguishing a class A fire is to（）.

A.remove oxygen from the area

B.cool fuel below ignition temperature

C.smother with CO₂

D.smother fire with foam