()是衡量总体中个别项目值在总体平均值周围变异或离散程度的尺度。A.总体规模 B.可

题型:单项选择题

问题:

()是衡量总体中个别项目值在总体平均值周围变异或离散程度的尺度。

A.总体规模

B.可容忍误差率

C.预期总体误差率

D.总体标准差

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题型:单项选择题

Where is Love? How can we find Love?

Once a little boy wanted to meet Love. He knew it was a long trip to where Love lived, so he got his things ready with some pizzas and drinks and started off. When he passed three streets, he saw an old woman sitting in the park and watching some birds. She looked very hungry. The boy gave her a pizza. She took it and smiled at him. The smile was so beautiful that he wanted to see it again, so he gave her a Coke. She smiled once again. The boy was very happy.

They sat there all the afternoon, eating and smiling, but they said nothing. When it grew dark, the boy decided to leave. But before he had gone more than a few steps, he turned around, ran back to the old woman and gave her a hug. The woman gave him her biggest smile ever.

When the boy opened the door of his house, his mother was surprised by the look of joy(快乐)on his face and asked what had made him so happy. “I had lunch with Love. She has got the most beautiful smile in the world.” At the same time, the old woman,s son was also surprised at his mother,s pleasure and asked why.

“I ate a pizza in the park with Love,” she said, “and he is much younger than I expected.”

If the world is full of love, we can enjoy a better life.

小题1:When the little boy saw the old woman, she was   .

A.looking for a seat in the park

B.passing the street

C.looking at some birds

D.having a pizza小题2:The little boy gave the old woman a Coke because   .

A.the old woman still felt hungry

B.he wanted to see the smile again

C.he didn,t like the drink

D.the old woman paid him for it小题3:The old woman gave the little boy the biggest smile   .

A.after the little boy went home

B.before it grew dark

C.when she was drinking Coke

D.after the little boy hugged her小题4:The boy,s mother was surprised to see her son was very   when the door opened.

A.pleased

B.sad

C.unhappy

D.angry小题5:Which of the following is TRUE?_____

A.The little boy failed to find Love.

B.Both the little boy and the old woman found what they wanted at last.

C.The little boy decided never to go home.

D.The old woman gave the little boy a hug to thank him.

题型:单项选择题

It’s surprising that your brother _____ Russian so quickly—he hasn’t lived there very long.

A.picked up

B.looked up

C.put up

D.made up

题型:单项选择题

用趋势剔除法测定季节变动()

A.考虑了现象发展中长期趋势的影响

B.所得季节比率之和正好等于零

C.要求具备连续三年以上的分月(季)资料

D.各季季节比率之和调整后等于400%

E.适用于没有长期趋势的时间序列

题型:单项选择题

Frame Relay is simplified form of (1) , similar in principle to (2) , in which synchronous, frames of data are routed to different destinations depending on header information.

Packets are routed throught one or more Virtual Circuits known as (3) Most Virtual Circuits are (4) , which means that the network provider sets up all DLCI connections at subscription time. (5) are also part of the Frame Relay specification. They privide a link that only lasts only as long as the session.

5()

A.Permanent Circuits

B.Permanent Virtual Circuits

C.Switched Virtual Circuits

D.Switched Circuits

题型:单项选择题

中小学校贯彻教育方针,实施素质教育,实现培养人的教育目的的最基本途径是()

A.德育工作

B.教学工作

C.课外活动

D.学校管理

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