()能对既含有已知信息又含有未知或非确定信息的系统进行预测。
A.马尔可夫分析法
B.多元回归分析法
C.灰色预测模型法
D.经济计量模型法
参考答案:C
从方框中选择适当的句子完成对话,其中有一项是多余的。(5分)
A: Morning! What can I do for you?
B: We’d like to make a trip for a weekend holiday.
A: There are many travel routes(路线)小题1:
B: We’d like to choose Dalian.
A: It’s really beautiful. I’m sure you’ll enjoy yourselves there.
B: 小题2:
A: By plane.
B: 小题3:
A: About one hour. How long will you stay there?
B: About two days. 小题4: .
A: $1500.
B: Thank you very much.
A: 小题5: . Have a wonderful trip.
下图为某大洲地形剖面示意图。读图回答下列问题。
关于甲地与所在大洋对岸(同纬度)的叙述,正确的是()。
A.甲地海水的盐度比对岸海域更高
B.甲地上升流比对岸海域更显著
C.甲地大陆沿岸一派油橄榄林风光
D.甲地对岸的沿岸一片草原景观