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【单选题】
按预测的方法和性质划分,预测分为 ( )。A.
近期预测，短期预测
B.
时间系列数据预测，回归方程预测
C.
理论曲线预测，模拟预测
D.
定性预测，定量预测
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【简答题】助留助滤剂一元常用的化学品是?二元和三元的特点各是什么?微粒助留是指。
【简答题】Is it necessary for the companies to retain quality staff? Why? How to retain quality staff.
【简答题】助留助滤剂一元常用的化学品是( ）。
【单选题】According to the paragraph 7, is it necessary for us to we care about nature when we have modern technology?
A.
Yes, it is necessary.
B.
No, it is not necessary.
【简答题】Why is it necessary for a______ and industry to develop very quickly.
【单选题】对话理解 听力原文：W: Is it necessary for me to make a note of all my assets? M: Yes, of course, thus you can work out what sort of investment suits you and over what time frame. Q: Why should the woman make a...
A.
Thus she can know the most appropriate investment and the best time of investment.
B.
Thus she can earn a lot of money.
C.
Thus she can help others.
D.
Thus she can know about how much money she has.
【简答题】Is it necessary for a young man to have an apartment as a prerequisite（先决条件） for marriage? Housing has become a major obstacle（障碍） for Chinese young men hoping to start a family. China may breed a new...
【简答题】Why is it necessary for all engineers to be familliar with manufacturing processes?
【简答题】Is it necessary for students to learn _____ foreign language besides English? A.a second B.second C.two D.the second
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