在描述频数表资料的集中位置时,下面哪一项不正确()
A.中位数与百分位数
B.均数与标准差
C.均数与几何均数
D.算术均数
E.P50
参考答案:B
短文填空。
根据短文内容和首字母提示,把所缺单词填写在短文后面相应的横线上,使句意完整。
When you laugh, you will o 1 your mouth and show your teeth. The healthier those teeth are, the happier you look. Why is that?
It’s because your teeth are important in many w 2 . If you take care of them, they’ll help to take care of you. Strong healthy t 3 help you eat the right food to help you grow. They also help you speak clearly.
Brush your teeth t 4 a day-after breakfast and before bedtime.
You also need to care about w 5 you eat and drink. Eat lots of fruits and vegetables and drink water instead drinks.
1.___________ 2.___________ 3.___________ 4.___________ 5.___________
在国际条件下应用激励的需求理论应该考虑的不同因素包括()。
A.认识在国家或当地文化下工作的基本职能
B.认识在国家或当地文化下员工认为最重要的需要
C.对同样的需要,满足需要的来源可能不同
D.理解满足需要的现有工作的局限性