若a,b,c分别为△ABC的三边之长,则|a-b-c|+|b-c-a|-|c-a-b

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问题:

若a,b,c分别为△ABC的三边之长,则|a-b-c|+|b-c-a|-|c-a-b|=()。

A.a+b+c

B.b+c-a

C.3a-b-c

D.3c-a-b

考点:在职联考GCT(数学)常见的几何图形(二)
题型:单项选择题

阅读理解。

       The English language we know today is about six hundred years old. For half that time, English was

  just language of the people living in England. The modem English language grew from about the year

  1400. Now English is the most widely spoken language in the world. It is one of the working languages at

   International meetings, business, science and in other fields.

       The differences between American English and British English are not very great. Written English is

  more or less the same in both Britain and America, though there are some spelling differences. For

  example, centre, licence, colour and travelled are spelt center, license, color and traveled in American

  English. In America, "cock, rubber, ill, holiday, lorry and post" are called "rooster, eraser, sick, vacation,

  truck, mail". But people from the two countries can still understand each other easily.

       There are only a very small number of differences in grammar between American English and British

  English. Some words may have two kinds of pronunciation. You may wonder "Which is correct?" The

  answer is that it doesn't matter. But you should speak either American English or British English. Don't try

   to speak both at the same time!

1. When did the modem English language begin to grow?

    ______________________________________________________________

2. Is English the only working language at International meetings?

    ______________________________________________________________

3. What is the word "color" spelt in British English?

    ______________________________________________________________

4. What is the word "ill" called in American English?

    ______________________________________________________________

5. How many differences are there in grammar between American English and British English?

    ______________________________________________________________

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海绵窦综合征受累的颅神经是()

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B.Ⅲ

C.Ⅳ

D.Ⅴ

E.Ⅵ

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需行气管插管、胸腔闭式引流的是()。

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B.单纯性肋骨骨折

C.多发性肋骨骨折

D.多发性肋骨骨折伴有昏迷

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C.工作量大/费用高

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把用高级程序设计语言编写的源程序翻译成目标程序(.odj)的程序称为______。

A.汇编程序

B.编辑程序

C.编译程序

D.解释程序

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