采用定量订货法进行采购时，当（）即为采购日期。
A.当某一存货达到订货点时
B.每隔一定周期
C.需用货物时
D.当存货达到安全储量
参考答案：A
Speaker A: Do you mind if I change the channelSpeaker B: ().
A. Actually, I think this program is quite interesting.
B. Yes, you can switch to the channel you want to watch.
C. Never mind. Just go ahead.
D. Certainly. You can do what you like.
以下程序运行后的输出结果是 #include＜stdio.h＞ main( ) int i，j； for(i=3；i＞=1；i--)for(j=1；j＜=2；j++)printf("%d"，i+j)；printf("\n")；
A) 2 3 43 4 5B) 4 3 25 4 3C) 2 33 44 5D) 4 53 42 3
