A plane is ______than a car. [ ]
A. much fast
B. more fast
C. more faster
D. much faster
D
设变量已正确定义并赋值,以下正确的表达式是______。
A) x=y*5=x+z B) int(15.8%5)C) x=y+z+5,++y D) x=25%5.0
若两圆半径R=3,r=2,且圆心距为1,则这两圆的位置关系是 [ ]
A.外切
B.内切
C.相交
D.内含