假设某计算机系统的内存大小为256KB,在某一时刻内存的使用情况图12-3(a)所示

题型:单项选择题

问题:

假设某计算机系统的内存大小为256KB,在某一时刻内存的使用情况图12-3(a)所示。此时,若进程顺序请求20KB、10KB和5KB的存储空间,系统采用______算法为进程依次分配内存,分配后的内存情况图12-3(b)所示。

考点:计算机软件水平考试中级网络工程师网络工程师
题型:单项选择题

阅读理解。

    Mr Read works in a hospital. He's a good doctor, but he often forgets things. People know him and

don't mind it.

    One morning he did an operation on an old woman. It took him three hours to finish it. He looked at

his watch and found it was twelve thirty. He felt hungry and wanted to have lunch.

    When he got to the lift, he remembered he didn't wash his hands. He went back to his office and put

his coat on the chair. Then he washed his hands and left. However in the restaurant, he found he forgot

to wear his coat. All his money was in one of the pockets. He got up and went back to the hospital. He

ran to the lift but it was going to close. He put his head into it, and the doors opened. A man in the lift

said, "Oh, dear, sir! Why didn't you hold the doors open with your hands? It's too dangerous to do so

with your head!"

    "I think my hands are more important than my head. I have to do operations not with my head, but

with my hands!"

1. People know Mr Read ______, but they don't mind it.[ ]

A. is a doctor

B. often forgets things

C. works in the hospital

D. often does operations

2. The operation began at ______ that morning. [ ]

A. eight thirty

B. nine

C. nine thirty

D. ten

3. Mr Read returned to his office because ______. [ ]

A. he forgot to wash his hands

B. it was cold and he had to wear his coat

C. he was too tired to go to the restaurant

D. he had to borrow some money

4. Mr Read left the restaurant because ______. [ ]

A. he ate much there

B. he couldn't find his friend

C. he had no money with him

D. it was closed

5. Mr Read put his head into the lift because ______. [ ]

A. he wanted to know who was in it

B. he wanted to get out of it

C. his head was much harder than his hands

D. he was afraid it could hurt his hands

题型:单项选择题

检查发动机和制冷压缩机皮带,在皮带中间用手指下压()为正常。

A、10~15mm

B、5~10mm

C、15~20mm

D、10~12mm

题型:单项选择题

We must keep the classroom _____.    [ ]

A. clean

B. to clean

C. cleaning

D. cleaned

题型:单项选择题

发动机水温过高的原因哪些?

题型:单项选择题

地下水可开采量是一定期限内既有补给保证,又能从含水层取出的稳定开采量,其估算方法可以采用()。

A.经验公式法

B.实际开采量调查法

C.可开采系数法

D.多年调节计算法

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