AU指针的作用是（）。
A:指示高阶VC首字节在AU净负荷中的位置 B:指示低阶VC首字节在TU净负荷中的位置 C:对低阶VC进行速率适配
金（Au）是（）。
A:体心立方晶格 B:面心立方晶格 C:密排六方方晶格
如下图所示的传输链路上，网元A为1650SM设备，其余网元B，C，D，E，F为1660SM设备，网元A的一路STM1的信号与网元B的STM1端口连接，该路信号再以AU4单向连接到网元B的另一个STM-16端口的某一个AU4上，该AU4通道在链路上一直中继传输到网元F，最后终接于F的某一个STM1端口，问当A，B网元之间的线路中断后，在网元B的STM-1端口单元上会有（）告警
A:LOS B:LOF C:MS-AIS D:AU-AIS E:AU-LOP
AU指针的主要作用是（）。
A:对低阶VC速率适配，容纳其对应于AU的频差相差 B:对高阶VC速率适配，容纳其对应于AU的频差相差 C:指示高阶VC首字节在AU净负荷中的位置 D:指示低阶VC首字节在TU净负荷中的位置
当收端检测出AU-PTR为1023时，分别会有（）告警。
A:AU-AIS B:MS_RDI C:AU-LOP D:MS－BBE
The passage is most likely a part of ______.
A:a news article B:a research report C:a preface D:a journalistic interview
B
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If you want to have a guitar lesson, you may .
A:call Susan at 7328059 B:surf the website:www.music.com.au C:telephone Mr.White at 5132683 D:email
B
Take a look at the following ads! You may find some useful information you need here!Guitar lessons
Experienced musicians from Australia. Good at teaching kids for 5 years!
For more information, please visit Larrys website:www.music.com.au.Lost dog
Medium size, with brown spots and whits short hair. Answer you when you call it David. Many thanks for sending it back.
Call Susan at 7328059.Taxi driver wanted
Full time or part time. Experience and a good knowledge of the city are necessary. English is also a must.
Under 45 years old.
Call Mr.White at 5132683.Apartment for sale
Two bedrooms, a kitchen and a bathroom.
Hot water: 8:00—18:00.
Beautiful sights out of the windows.
Email:sdgt@yahoo.cn.
If you want to have a guitar lesson, you may .
A:call Susan at 7328059 B:surf the website:www.music.com.au C:telephone Mr.White at 5132683 D:email
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