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【单选题】
下面的描述中,( )是错误的。
A.
进程执行的相对速度不能有进程自己来控制
B.
P、V操作是原语操作
C.
利用信号量的P、V操作可以交换大量信息
D.
同步是指并发进程之间存在的一种制约关系
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参考答案:
举一反三
【简答题】任务型阅读。 How do you feel about exams ? Is it the one thing you are afraid or an experience you enjoy because it's your time to shine ? Every year , many young people sit in exams and whether they love o...
【多选题】资产评估的工作原则有( )。
A.
独立性原则
B.
客观性原则
C.
公正性原则
D.
科学性原则
【简答题】It's not good to sit in front of the computer the whole evening. It's not good ____________________________________(喝太多咖啡).
【简答题】1 1)But often it is not until we ( 生了病 ) that we ___________________finally learn to appreciate good health. 2)A rich old lady _ ___________________________________________________( 死了躺在家里两个星期 ) — and...
【简答题】根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。 — What a tiring evening! — Oh, it's good to sit down after all that standing. — 1 — I don't think I've ever felt so tired in my life. 2____ — And the heat. _3...
【简答题】It's not good to sit in front of the computer the whole evening. It's not good ____________________________________(吃得太多).
【单选题】下图小儿睡觉时,眼睑睁开,呈露睛状(俗称“睁着眼睛睡觉”),这是什么原因引起的?
A.
脾胃虚弱
B.
肝肾不足
C.
气血亏虚
D.
先天不足
【简答题】1)But often it is not until we ( 生了病 ) that we ___________________finally learn to appreciate good health. 2)A rich old lady _ ___________________________________________________( 死了躺在家里两个星期 ) — and n...
【简答题】用所给词的适当形式填空。 1. He is now in the __________ (sit) room 2. It's very __________ (friend) to say 'Hello' to others. 3. He is not good at__________ (swim), but he is a good _________ (climb). 4. The blac...
【单选题】It's not good _______in front of the computer for a long time.
A.
sit
B.
to sit
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