【多选题】
5G NR的同步信号PSS和SSS，其各占用频域资源的长度为（ ）。
A. 144个子载波
B. 180个子载波
C. 127个子载波
D. 72个子载波
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相关试题
【多选题】
5G的愿景是（ ）。
A. 高速率，高可靠
B. 万物互联
C. 一切皆有可能
D. 信息随心至，万物触手及
【多选题】
在3GPP Rel-15的第一版本所定义的2种频率范围中，工作频段区间在1GHz~6GHz时支持的子载波间隔是（ ）。
A. 60KHz
B. 120KHz
C. 30KHz
D. 15KHz
【多选题】
下哪个是属于CDMA系统的语音编码技术？ （ ）
A. 13K QCELP
B. 8k EVRC
C. 8k QCELP
D. 64k PCM
【多选题】
下面关于直放站的说法哪个是错误的（ ）。
A. 直放站会带来切换问题
B. 直放站可以增大基站容量
C. 直放站会导致基站灵敏度降低
D. 直放站可以扩大覆盖区域
【多选题】
关于无线传播损耗，以下哪些说法是正确的。（ ）
A. 其他损耗，如穿透损耗等。一般通过预留损耗余量降低对通信质量的影响。
B. 快衰落损耗：多径效应，由多径传播引起，表现为正态分布。一般通过功控均衡等
C. 阴影衰落损耗：阴影效应，由地形地物引起，表现为高斯分布。
D. 空间传播损耗：随距离衰减的电播传播损耗，为固定斜率的衰减。
【多选题】
典型IP电信网络的结构可分为（ ）。
A. 汇接网
B. 接入网
C. 骨干网
D. 城域网
【多选题】
若LTE子载波间隔为15kHz，系统噪声系数为4，则在一个子载波带宽内的系统底噪约为 ( ) dBm。
A. -125
B. -130
C. -120
D. -128
【多选题】
LTE测量报告里显示邻区RSRP为47，则邻区的实际RSRP值是( ) dBm。
A. -83
B. -103
C. -73
D. -93
【多选题】
哪个模式为其他MIMO模式的回退模式( )
A. TM2
B. TM4
C. TM1
D. TM3
【多选题】
（ ）可以用来根本性解决越区覆盖的方法。
A. 调整越区小区下行调度方式
B. 调整越区小区上行功控参数
C. 适当降低越区小区的发射功率
D. 调整越区小区及其周边小区的切换门限参数
E. 调整越区小区天线参数（高度，倾角，方位角等）
【多选题】
NB终端在发送RRCConnectionRequest时启动（ ）定时器，定时器超时前，如果收到RRCConnectionSetup或者RRCConnectionReject，则停止该定时器。
A. T301
B. T311
C. T300
D. T310
【多选题】
以下（？ ）过程是RRC连接恢复过程中可能包含的信令流程。
A. RRCConnectionResume
B. RRCConnectionSetupComplete
C. RRCConnectionResumeRequest
D. RRCConnectionRequest
【多选题】
NB-IoT上行资源的最小调度单位是什么？（ ）
【多选题】
NB–IoT支持哪几种数据传输模式？（ ）
A. UP优化
B. EP优化
C. CP优化
D. DP优化
【多选题】
NB-IoT小区定点测试时好点的下载速率要求大于（ ）。
A. 15kbps
B. 30kbps
C. 10kbps
D. 25kbps
【多选题】
5G中sub-6GHz频段能支持的最大带宽为：（ ）
A. 100MHz
B. 60MHz
C. 200MHz
D. 80MHz
【多选题】
5G中SDAP功能包括（ ）。
A. 完整性保护
B. IP头压缩
C. 负责QoS流与DRB（数据无线承载）之间的映射
D. 为数据包添加QFI标记
【多选题】
关于5G毫米波通信技术的优势描述正确的有（ ）。
A. 可用频带宽，可提供几十GHz带宽
B. 方向性好，受干扰影响小
C. 受空气和雨水等影响很小
D. 波束集中，提高能效
【多选题】
PUCCH支持多种格式，以下哪几种格式只能支持1~2个OFDM符号（ ）
A. Format 2
B. Format 1
C. Format 0
D. Format 4
E. Format 3
【多选题】
NR测量根据RS接收信号的类型可以分为：5G NR中SSB组成。
A. 基于CSI的测量
B. 基于PSS的测量
C. 基于SSB的测量
D. 基于CSI-RS的测量
【多选题】
EN-DC情况下，UE的RRC状态是由（ ）决定的。
A. MN
B. SN
C. MCG
D. SCG
【多选题】
在移动通信系统中，扩频通信的优点是（ ）。
A. 抗干扰和抗多径衰落能力强
B. 实现多址技术.提高频率复用率
C. 隐蔽性和保密性较强
D. 占用频带较宽，系统复杂
【多选题】
CDMA2000-1X前向用不同的（ ）区分不同的cell，反向用不同的（ ）区分不同的MS，同一个cell下或对于同一个MS用不同的（ ）区分不同的前，反向信道。（ ）。
A. 短PN码偏置
B. 短PN码
C. Walsh码
D. 长PN码偏置
E. 长PN码
【多选题】
CDMA手机停止异频搜索需要（ ）消息。
A. Candidate Frequency Search Response Message
B. Candidate Frequency Search Report Message
C. Candidate Frequency Search Request Message
D. Candidate Frequency Search Control Message
【多选题】
室内电梯覆盖为免入电梯发生掉话一般使用 （ ）直放机。
【多选题】
回波损耗 （ ）越好，0 表示损耗 （ ）
A. 越大，完全匹配
B. 越大，完全反射
C. 越小，完全匹配。
D. 越小，完全反射。
【多选题】
目前优化PDCCH覆盖性能的方法是（ ）
A. 自适应CCE
B. ICIC
C. 调频
D. 调度
【多选题】
下行半静态调度的功控中，如果IBLER测量值小于IBLER Target，应该( )发射功率
【多选题】
在无线网络优化项目中，全网优化的目的是（ ）
A. 解决簇优化阶段没有定位的问题，或已定位但优化调整可能产生比较大影响的问题
B. 对于簇交界处进行优化
C. 对硬切换边界的优化
D. 确保全网优化阶段结束后，网络各项运行指标达到验收要求
【多选题】
载波聚合的上行控制信息在哪个小区发送？( )
A. 仅在主小区发送
B. 主小区和辅小区分别发送
C. 仅在辅小区发送
D. 可由基站配置在主小区还是辅小区发送
【多选题】
下面关于LTE站点勘察说法正确的是（ ）。
A. 站点选择要满足无线网络拓扑结构设计要求
B. 要使天线主瓣正对着街道走向,以保证道路覆盖
C. 扇区天线发现方向按照规划法线方向设置时,要预留30度左右的调整余度
D. 进行站点拍照时,每60度拍一张照片
【多选题】
无线特性在终端和基站进行测量，并在网络中向高层进行报告。其包括：（ ）
A. 同频切换的测量
B. 用于不同无线接入技术（Radio Access Technology，RAT）之间切换的测量
C. 异频切换的测量
D. 定时测量
【多选题】
NPBCH的作用有（ ）。
A. 传递系统帧号
B. 传递NB-SIB1的调度信息
C. 传递接入限制信息
D. 传递操作模式信息
【多选题】
目前仅（ ）系统支持NB-IoT技术。
A. TD-LTE
B. FDD-LTE
C. GSM
D. CDMA
【多选题】
NB-IoT频谱部署方式包括以下哪几种？（ ）
A. EC-GSM
B. Standalone
C. Guard band
D. In-band
【多选题】
NB-IoT 的描述，以下正确的是？（ ）
A. 成本低
B. 覆盖增强
C. 电池寿命强
D. 海量的链接数
【多选题】
RLC协议层的三种传输模式中，NB-IOT取消了那种传输模式？（ ）
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【单选题】
3.—Did you have a good time at Lauras birthday party?
— Yes, indeed. Its several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
【单选题】
4. —___________ is the Summer Palace from here?
About three kilometers away. You can take the No. 35 bus.
A. How long B. How far C. How often D. How much
【单选题】
5. I was looking for a birthday gift for my mother, but I couldnt find ______ suitable.
A. anything B. something C. nothing D. everything
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6. A friend of my ____ and I are going to visit_______ next week．
A. father; Browns B. father's; Browns
C. father; the Browns D. father's; the Browns
【单选题】
7. She ______ very hard since she came to our school.
A. studies B. has studied C. is studying D. studied
【单选题】
8. — Who will send you to the new school, your mom or your dad?
— _______. Ill go there by myself.
A. Both B. Either C. Neither D. None
【单选题】
9.—Well do what we can ____English well this term．
—It’s high time for you to work hard．
A. study B．to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
【单选题】
12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
【单选题】
13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
【单选题】
14. We will have a _________ holiday after the exam．
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015．
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary．I hope it will help you in some way．
— Thank you．It’s ________ what I need．
A. almost B. still C. only D. just
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
【单选题】
) 1. Even Tony’s six-year-old son asked him ______ smoking.
A. stops B. stopped C. to stop D. stopping
【单选题】
2.—What do you think of the lecture of Li Yang’s Crazy English?
— I think it’s _______ , but someone thinks it’s much too ________.
A. wonderful enough; bored B. enough wonderful; boring
C. enough wonderful; bored D. wonderful enough; boring
