在操作系统中引入并发可以提高系统效率。若有两个程序A和B,A程序执行时所做的工作按次

题型:问答题

问题:

在操作系统中引入并发可以提高系统效率。若有两个程序A和B,A程序执行时所做的工作按次序需要用CPU10s,设备一5s,CPU5s,设备二10s,CPU10s;程序B执行时所做的工作按次序需要用设备一10s,CPU10s,设备二5s,CPU5s,设备二10s。
请计算:

如果在并发环境下执行两个程序,则CPU的利用率又为多少

考点:普通考研计算机学科专业基础综合考研操作系统
题型:问答题

有关妊娠期尖锐湿疣,下列哪项不正确

A.妊娠期患者较非妊娠期时增多

B.一般产后难以自行恢复

C.分娩时疣体过大可使产道梗阻大出血

D.分娩时疣体损伤可发生大出血

E.妊娠期尖锐湿疣常生长快,且数量多

题型:问答题
I was sitting in class one day when a new kid came in , He was called Christian and he was short and wore a pair of glasses, He walked up to the teacher and told her ,very  36   ,that he was new , The teacher  37  to the empty desk next to me . He sat down , looked briefly at me ,and then looked  38   . I didn’t think he was very nice , and certainly not the   39  I would like to become friends with ,
Over the year,I 40 talked to him,but he smiled at me when our eyes met, always shyly, He never talked to anybody   41 me.
But one day I  42  the unkind kids who were teasing him.We made fun of him   43  in my head I knew it was wrong . “Haven’t you got any friends ?”A kid asked Christian,who had walked past us  44   .“No,he hasn’t got any friends.He’s too  45   .”I said.
Then Christian looked up at me with the saddest eyes I had ever seen. My heart    46 .
In the weeks that followed, he never met my47 in class and never smiled at me. It was really hard for me to  48  to write him a note asking him to   49  it . I knew I had to because I couldn’t    50 the guilt and sadness that I felt  51  I saw him .
The next day in class, I wrote him a note   52 . About five minutes later .I turned and saw tears in his eyes. Later he told me that I would never realize how much my apology had  53   to him. Over the years at high school, we became    54 friends.
Apologies can really change your life , so never55  a chance to tell somebody you are sorry,
小题1:
A.shylyB.happilyC.secretlyD.strangely
小题2:
A.movedB.stuckC.leanedD.pointed
小题3:
A.outB.upC.downD.away
小题4:
A.signB.typeC.qualityD.problem
小题5:
A.perhapsB.seldomC.oftenD.even
小题6:
A.withB.aroundC.butD.beside
小题7:
A.sawB.helpedC.joinedD.controlled
小题8:
A.althoughB.sinceC.unlessD.before
小题9:
A.againB.aloneC.quietlyD.fearfully
小题10:
A.kindB.crossC.youngD.stupid
小题11:
A.sankB.beatC.brokeD.jumped
小题12:
A.greetingsB.glancesC.apologiesD.congratulations
小题13:
A.decideB.planC.hopeD.learn
小题14:
A.regretB.refuseC.forgetD.mention
小题15:
A.considerB.includeC.makeD.take
小题16:
A.even thoughB.as ifC.right awayD.every time
小题17:
A.explainingB.excusingC.apologizingD.arguing
小题18:
A.meantB.owedC.contributedD.suggested
小题19:
A.personalB.closeC.familyD.foreign
小题20:
A.giveB.standC.missD.reduce
题型:问答题

人工呼吸装置使用时,将面罩边缘放在病患下嘴唇和下巴之间,将面罩稍尖的一端罩在病患鼻上,确保面罩下方的嘴巴张开,适用于婴儿。

题型:问答题

个体工商户擅自使用他人已经登记注册的市场主体名称或者有其他侵犯市场主体名称权行为的,应当如何处理?

题型:问答题

6个月,男婴,人工喂养。平时易惊,多汗,睡眠少,近2日来咳嗽、低热,今晨突然双眼凝视,手足抽动。查体:枕后有乒乓球感。

可能的诊断是()

A.热性惊厥

B.低血糖症

C.颅内感染

D.低钠血症

E.维生素D缺乏性手足搐搦症

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