欲将方波电压转换成尖顶脉冲,应选用()。 A.微分运算电路 B.积分运算电路 C.加

题型:单项选择题

问题:

欲将方波电压转换成尖顶脉冲,应选用()。

A.微分运算电路

B.积分运算电路

C.加法运算电路

D.乘法运算电路

考点:民航电信人员执照考试模拟电路模拟电路题库
题型:单项选择题

Meta-分析的统计分析过程?

题型:单项选择题

6岁男孩,高热、头痛、呕吐3天,昏迷1天,2天前曾排稀便数次,无脓血,皮疹(-),心肺(-),脑膜刺激征(+),双侧巴氏征(+),大便常规无异常。血象:WBC6×109/L,N30%,L80%。最可能的诊断是()

A.化脓性脑膜炎

B.病毒性脑炎

C.中毒性脑病

D.中毒性菌痢

E.结核性脑膜炎

题型:单项选择题

患者,男性,25岁,以“高热、剧烈胸痛、咳嗽3天”入院,查左侧胸部有明显胸腔积液体征,结合有关辅助检查结果,初步诊断为“化脓性胸膜炎、大量胸腔积液”。

此病人的面容与表情,可表现为()。

A.无特殊病容

B.病危病容

C.急性面容

D.慢性病容

E.面具面容

题型:单项选择题
阅读下面短文,掌握其大意,然后从46-65各题所给的四个选项(A、B、C、D)中选出最佳选项。
Several days ago, I met a stranger in the street who stopped and asked me directions. I   36  to show him the way to the destination(目的地),but to my   37  he coldly refused my offer. I asked him why. Finally he told me that he was  38  I would ask him for money if I   39  him in this way.
Money! I   40 deep into thought. Is it money that comes between us? Money itself has no   41 ; yet it cannot simply be   42 to be good or bad. The problem  43  what attitude we have towards it.
At present, we have a more   44  material life than before, but we’re becoming more and more 45 . Why? In my opinion, the   46  is the change in people’s personal   47 . They wrongly believe that   48 money should be their only aim in life, so they   49  all sorts of ways they can to  50 this aim.
They are afraid of being   51  and fooled. If everyone acts like this, what will our  52 be like?
Needless to say, money is becoming more and more important in our society,   53  it shouldn’t be the “be-all and end-all” of life. If a person only concentrates on  54 , he will be lonely and void(空虚).
It is up to us to make our lives happy, not money. We should try our best to help others   55  and freely. If everyone does so, our society will be better and better.
小题1:
A.advisedB.offeredC.askedD.wished
小题2:
A.joyB.fearC.excitementD.surprise
小题3:
A.anxiousB.gladC.sorryD.afraid
小题4:
A.stoppedB.toldC.askedD.helped
小题5:
A.fellB.tookC.keptD.caught
小题6:
A.problemB.wayC.lifeD.use
小题7:
A.appearedB.doneC.connectedD.seemed
小题8:
A.takes inB.depends onC.results inD.leads to
小题9:
A.powerfulB.poorC.enjoyableD.healthy
小题10:
A.cold-hearted B.warm-hearted C.good-lookingD.humorous
小题11:
A.answerB.moneyC.manD.creature
小题12:
A.healthB.honorC.respectD.values
小题13:
A.takingB.costingC.givingD.making
小题14:
A.think upB.hold upC.give offD.break out
小题15:
A.realizeB.recognizeC.takeD.shoot
小题16:
A.foundB.discoveredC.cheatedD.followed
小题17:
A.schoolB.societyC.beliefD.money
小题18:
A.orB.butC.ifD.since
小题19:
A.lifeB.natureC.societyD.money
小题20:
A.wronglyB.coldlyC.mainlyD.whole-heartedly
题型:单项选择题

下列检查项目中哪些不属于一般杂质检查()

A.硫酸盐检查

B.氯化物检查

C.溶出度检查

D.重金属检查

E.砷盐检查

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