一家零售公司的内部审计师正在对采购环节进行审计。为了评估采购交易的效率，审计师决定计

发布时间：2017-08-29 09:07 │ 来源：www.tikuol.com

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一家零售公司的内部审计师正在对采购环节进行审计。为了评估采购交易的效率，审计师决定计算抽样产品的经济订货批量。在计算经济订货批量时，内部审计师不需要（）数据。

A.产品销售规模

B.产品采购价格

C.产品订购的固定成本

D.产品存货的规模

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电梯出现异常状况时，电梯司机可以离开电梯而不告知乘客（）

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完形填空。
How can we learn to write in English? I think learning to write well takes lots of 1 . Keeping a 2 is one way to practice. Writing lots of e-mails in English is another good way. Also reading English can help you 3 your writing , as you see many examples of good writing. Any book, magazine or newspaper can 4 many examples of good writing. 5 books, magazines or newspapers, students also need to see examples of writing which are 6 to their own writings. Try going to some composition webs, and you will find examples of students' compositions. These compositions may be not 7 , but they are good examples of how to make your writing 8 . After reading these compositions, try reading some of your own writings again. Can you find 9 grammar mistakes when you read them again? Can you think of some better word 10 ? Do you think you have good, pecific (确切的) examples? Try this way again and again, and you' ll make it.
( )1. A. reading ( )2. A. training ( )3. A. improve ( )4. A. have ( )5. A. However ( )6. A. according ( )7. A. perfect ( )8. A. better ( )9. A. no ( )10. A. spelling	B. writing B. diary B. make B. take B. Especially B. similar B. bad B. longer B. all B. choices	C. practice C. interest C. enjoy C. provide C. also C. next C. better C. shorter C. some C. usage	D. exercise D. thoughts D. care D. write D. besides D. as D. worse D. cleverer D. any. D. meaning

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MIDI是一种使用符号表示的、由计算机合成的音乐，与取样得到的波形声音相比有其自己的特点。下面关于MIDI的叙述中，错误的是( )。

A．表示同一首乐曲时，它的数据量比波形声音要少得多
B．同一MIDI乐曲文件，在不同的系统中播放出来的音质是完全一样的
C．它比波形声音更易于编辑修改
D．它生成的音乐质量不如波形声音

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简述展览会的主办机构。

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欧姆定律是用来说明电路中电压.电流.电阻，这三个基本物理量之间关系的定律，它指出：在一段电路中流过电阻的电流I，与电阻R两端电压成正比，而与这段电路的电阻成反比。

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