uC/OS-II系统中的每个任务都处在以下5种状态之一：休眠态、就绪态、运行态、挂起

发布时间：2017-09-03 13:07 │ 来源：www.tikuol.com

题型：单项选择题

问题：

uC/OS-II系统中的每个任务都处在以下5种状态之一：休眠态、就绪态、运行态、挂起态（等待某一事件发生）和被中断态，以下哪个说法是错误的（）。

A.任务处于休眠态，相当于该任务驻留在外存中，但还没有交给内核管理

B.任务处于就绪态，意味着该任务已经准备好，可以运行了，但由于该任务的优先级比正在运行的任务的优先级低，还暂时不能运行

C.任务处于运行态，指任务得到了CPU的控制权正在运行之中

D.任务处于被中断态，是指发生中断时执行相应的中断服务，原来正在运行的任务暂时停止运行，进入了被中断状态

考点：嵌入式软件助理工程师嵌入式软件助理工程师题库

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( )1. Jenny is a pet lover. She will have her
           summer holidays in two weeks' time.
           Which message will draw her attention?
( )2. David is the boss of a big education
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(    )3. Wang Lan just came back from England.
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(     )4. Helen is a housewife. Which message
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( )5. The students in No.2 Middle School plan
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A. Lots of people miss their pets
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    We lend cats or dogs to you.
    We are sure that you will be happy
    to stay with them.
B. Many people like animals
    and take them as their pets.
    Now pet hospitals are very busy.
    Kind people who love animals
    are needed to work in busy hospitals.
C. Living in another country can
   help you to learn a language, and
   about another culture. Many companies
    today need employees (雇员) who can
    speak a foreign language, or have the
    experience of living or working in
    another country.
D. We sell eggs, apples, tomatoes and
     pork at very low prices, Our business
     hours are from 6:00 am to 10:30 pm.
E. Our city will have a cloudy day tomorrow.
    It will be rainy at times. There will be a
    strong wind. The day after tomorrow will
   be sunny. It will be a fine day to go hiking
    or to have a picnic.
F. We have all kinds of video films,
   TV plays, and music videos. You
    can enjoy yourself and take time to
    watch your favourite videos at our shop.
    You can also borrow some videos home,
   each video for a week for I dollar.
G. A study of the people in China's largest
   cities shows that saving money for children's
   education has become an important reason
   for saving. It is the second most important
   purpose of people's saving habit. The result
   shows that people in China care much about
   education. The education market is very big in
    China.
H. If you have a few free hours during the day,
     some evenings and weekends to care for a
    schoolbag child, please call Susan at 800-4964.

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