主风分布不均匀,氧含量局部过剩会()
A、炭堆
B、不影响
C、二次燃烧
参考答案:C
下列计算错误的是[ ]
A.(-2x)3=-2x3
B.-a2·a=-a3
C.(-x)9÷(-x)3=x6
D.(-2a3)2=4a6
— Could you tell me _____ to see me next week?
— I'm not sure. If I'm free, I will. [ ]
A. if you will come
B. how you will come
C. whether you would come