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【多选题】
对于经典线性回归模型,各回归系数的普通最乘法估计量具有的优良特性有( )A.
无偏性
B.
有效性
C.
确定性
D.
线性特性
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【简答题】D2—question 1. A. Marketing. B. Business Management. C. International Trade. D. Secretarial D2—question 2. A. 800yuan per month. B. 1,800yuan per month. C. 2,500yuan per month...
【单选题】下面程序段执行后, sum 的值为 int i,sum=0; for(i=0,sum=0;i<=10;i++,sum++);
A.
10
B.
11
C.
12
D.
14
【简答题】D1—question 1. A. On the phone. B. In the office. C. In the meeting. D. In the restaurant. D1—question 2. A. TV. B. Poster on bus stop. C. Radio. ...
【简答题】D1—question 1. A. countryside B. Big cities C. Old towns D. Seashore D1—question 2. A. 4000yuan . B. 5000yuan. C. 4500yuan. D. 6000yuan.
【单选题】Part B. Exercise 1. question 2.
A.
in Peter's home
B.
in the street
C.
in the gym
D.
on their way to the gym.
【简答题】D2—question 1. A. Customer loyalty. B. Customer satisfaction. C. Customer service. D. Customer complaints. D2—question 2. A. Purchasing Department. B. Sales and Service. C....
【简答题】D1—question 1. A. About 4 years. B. About 5 years. C. About 2 years. D. About 3 years. D1—question 2. A. Body lotion. B. Hair gel. C. Shampoo. D. Hair conditioner.
【单选题】下面程序段执行结束后变量i的值为（） For I=2 To13 Step3 Print i Next i Print"i="；i
A.
11
B.
13
C.
14
D.
17
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