I am thirsty. Could you let me have _____ coke? [ ]
A. little
B. any
C. some
D. other
答案:C
冷冻油的作用有润滑压缩机内各运动部件及降低压缩机噪声。()
设y=y(x)是南方程xy=ex-ey确定的函数,则