关于噪声电平,以下说法错误的是:()A.分别在直放站的输入端和输出端测试上下行噪声电

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问题:

关于噪声电平,以下说法错误的是:()

A.分别在直放站的输入端和输出端测试上下行噪声电平(对于光纤直放站,分别在中继端机的输入端和覆盖端机的输出端测试上下行噪声电平)。

B.要求直放站上行噪声电平小于-36dBm。

C.要求直放站到达施主基站(CDU端)的上行噪声电平小于-150dBm。

D.设直放站上行噪声电平为PNR,从施主基站(CDU端)到直放站输入端的信号损耗为LP,则要求直放站上行噪声电平:PNR〈-120dBm+LP。

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(1)百年老树枝繁叶茂(2)勘测施工线路(3)将老树平行移动300米(4)研究制定移动方案(5)老树萌发新芽

A.5-2-3-4-1

B.1-2-4-3-5

C.1-2-3-4-5

D.2-1-4-3-5

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No one in the United States could forget the sorrowful story, April 14th, 1865 36 Abraham Lincoln was murdered.
The night after a very busy  37 , the President and his wife went to Ford’s Theatre in Washington D.C where a new play was to be put on.
Near the theatre  38  a 25-year-old unsuccessful actor named John Wilkes Booth, who was strongly against the North though he hadn’t fought  39 the South himself. As the play  40  after a moment of rest, Booth came into the theatre. He walked slowly and quietly  41  the door through which he could see the President’s  42. He looked  43  carefully so as to find the guards  44  task was to protect the President from the enemy. To his joy, there was none of  45  and nobody noticed him. He reached the door quickly and began to get hold of the gun  46  in his pocket.
It was quiet in the theatre and everyone 47  his eyes on the stage. Suddenly a terrible sound of  48  broke in on the play. It surprised everyone and soon they looked  49  where the sound had just come .Smoke was seen coming out of the President’s box, where the  50  had enjoyed the play. Right away the theatre was full of shouting and excited people. Soldiers hurried in to  _51  the building, but it was too  52 ! The murderer had already  53  from the box onto the stage, from which then he hurriedly ran out of the theatre and soon disappeared in the  54_.
The news came that Lincoln, whom the people had  55  to love as an inspiring leader and a wise, warm-hearted, honest man, was short in the chest and died early the next morning.
小题1:
A.asB.whereC.whenD.how
小题2:
A.timeB.work C.dayD.hour
小题3:
A.livedB.stayedC.stoodD.worked
小题4:
A.against B.with C.forD.under
小题5:
A.stopped B.startedC.lastedD.ended
小题6:
A.towards B.into C.upD.over
小题7:
A.faceB.wife C.boxD.hat
小题8:
A.aroundB.behindC.backD.forward
小题9:
A.whichB.whoseC.thatD.their
小题10:
A.guardsB.them C.peopleD.soldiers
小题11:
A.hiddenB.putC.keptD.lain
小题12:
A.put B.fixedC.madeD.fastened
小题13:
A.gun B.cryC.shotD.noise
小题14:
A.atB.upC.downD.to
小题15:
A.wifeB.guardC.LincolnsD.President
小题16:
A.searchB.encloseC.search forD.looked at
小题17:
A.noisyB.dark C.lateD.smoky
小题18:
A.wentB.rushedC.runD.jumped
小题19:
A.buildingB.dark C.crowdsD.country
小题20:
A.wantedB.gone C.comeD.meant
题型:单项选择题

在我国境内进行的大型基础施工工程建设项目,可以不进行招标的环节是( )。

A.可行性研究

B.勘察设计

C.施工

D.监理

题型:单项选择题

患者,女,14岁。月经来潮半年多,周期不定,为 5~7日/1~3月一行,经量较多,其月经不调的原因可能是

A.子宫发育不成熟
B.卵巢无成熟卵泡形成
C.下丘脑和垂体调节功能不成熟
D.LH持续高水平
E.FSH分泌量过多

题型:单项选择题

输血可能引起的最严重的并发症是()。

A.非溶血性发热反应

B.变态反应和过敏反应

C.溶血反应

D.细菌污染反应

E.出血倾向

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