系统储存能
参考答案:
是指热力学能、宏观动能、和重力位能的总和。
—Shopping with me?
—Sorry. I have a lot of clothes _____ . [ ]
A. to wash
B. washed
C. wash
D. to be washing
设偶函数f(x)满足f(x)=x3-8(x≥0),则x|f(x-2)>0=______.
A.x|x<-2或x>4 B.x|x<0或>4C.x|x<0或x>6 D.x|x<-2或x>2