结构化分析方法的基本思想是______。
A.自底向上,逐步抽象 B.自底向上,逐步分解 C.自顶向下,逐步分解 D.自顶向下,逐步抽象
参考答案:C
压路机的滚筒是圆柱形,它的长是1.5米,横截面直径是1.2米,如果每分钟转动10圈,那么每分钟可压路面多少平方米?
The Natural Approach believes that the teaching of () should be delayed until comprehension skills are established.
A. listening
B. speaking
C. reading
D. writing