路程一定,车轮的周长和转数成正比例.______.
因为车轮的周长乘车轮转数等于路程,如果路程一定,则车轮的周长和转数成反比例关系,
所以原题说法错误.
故答案为:×.
Software design is a (66) process. It requires a certain (67) of flair on the part of the designer. Design can net be learned from a book. It must be practiced and learnt by experience and study of existing systems. A well (68) software system is straight forward to implement and maintain, easily (69) and reliable. Badly (68) software systems, although they may work are (70) to be expensive to maintain, difficult to test and unreliable.
70()
A.like
B.likely
C.unlike
D.unlikely
进度偏差为正时表示工期( )。
A.提前B.拖延C.不变D.不确定