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【简答题】
简单算术股价平均数的优点是计算简便，缺点是发生样本股送配股、拆股和更换使股价平均数失去真实性、连续性和时间数列上的可比性；在计算时没有考虑权数，即忽略了发行量或成交不同的股票对股票市场有不同影响这一重要因素。
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【简答题】在 Excel 2010 旳工作表中,若 Al 为“2O”,B1 为 “40'; A2 为"15': B2 为"30 在C1输入公式“=$A1+B$1 ",将公式从C1复制到C2,则C2的值为
【单选题】When you are meeting your coworkers Normally , HR manager or head of office will introduce and welcome you. Which of the following introduction speech is not appropriate ?
A.
It's my pleasure to extend a cheerful welcome to you all.
B.
On behalf of my colleagues , I wish you all a convivial welcome.
C.
Hello , how are you doing today ?
D.
Luckily the weather has aligned with our wishes . The sun and bid you a warm welcome.
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【单选题】When you are meeting your coworkers. Normally, HR manager or head of office will introduce and welcome you. Which of the following introduction speech is not appropriate?
A.
Luckily the weather has aligned with our wishes. The sun and I bid you a warm welcome.
B.
It's my pleasure to extend a cheerful welcome to you all!
C.
Hello, how are you doing today？
D.
On behalf of my colleagues, I wish you all a convivial welcome.
【单选题】When you are meeting your coworkers. Normally, HR manager or head of office will introduce and welcome you. Which of the following introduction speech is not appropriate?
A.
It's my pleasure to extend a cheerful welcome to you all!
B.
On behalf of my colleagues, I wish you all a convivial welcome.
C.
Hello, how are you doing today?
D.
Luckily the weather has aligned with our wishes. The sun and I bid you a warm welcome.
【简答题】在Excel2010旳工作表中，若A1为“20”,B1为“40”，A2为“15”，B2为“30”，在C1输入公式“=$A1+B$1”,将公式从C1复制到C2，则C2的值为___。
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