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单项选择题
A.while(Distance< 250)
B.when(Distance>250)
C.over(Distance le 250)
D.until(Distance=250)
单项选择题
A.identify var=var1(2);
B.identify var=var1(1,1);
C.identify var=var1(1)nlag=2;
D.identify var=var1(2)nlag=2;
单项选择题
A.IDnum;Item;InStock;BackOrd ;Total
B.Item;IDnum ;InStock ;BackOrd ;Total
C.Total;IDnum;Item ;InStock ;BackOrd
D.Total;Item ;IDnum ;InStock ;BackOrd
单项选择题
A.ARIMA(0,1,0)Yt=Yt-1
B.ARIMA(0,1,0)Yt=Yt-1+Et
C.ARIMA(0,1,0)Yt=U+Yt-1+Et
D.ARIMA(0,1,0)Yt=U+Yt-1
单项选择题
A.do i=1to dim(factors);
B.do i=1to dim(*);
C.do i=1,2,3,4;
D.do i=1to 4;
单项选择题
A.State=scan(address2,2);
B.State=scan(address2,13,2);
C.State=substr(address2,2);
D.State=substr(address2,13,2);