GPRS的英文全称为:()。 A: AGlobal Packet Radio Service B: BGeneral Packet Radio Service C: CGeneral Packet Radio System D: DGlobal Packet Radio System
GPRS的英文全称为:()。 A: AGlobal Packet Radio Service B: BGeneral Packet Radio Service C: CGeneral Packet Radio System D: DGlobal Packet Radio System
You can see()on the table. A: a packet of prawn B: two packets of prawn C: a packet of praw
You can see()on the table. A: a packet of prawn B: two packets of prawn C: a packet of praw
PSTN (public switched telephone network) consists:
PSTN (public switched telephone network) consists:
Please fasten your seat belt, open the sunshade, and make sure all electronic devices have been _____ A: switched off B: open C: switched on D: closed
Please fasten your seat belt, open the sunshade, and make sure all electronic devices have been _____ A: switched off B: open C: switched on D: closed
Xiao Fei always keeps his phone switched on.
Xiao Fei always keeps his phone switched on.
the ____ of love notes A: packet B: delivery
the ____ of love notes A: packet B: delivery
Before the machine is switched on, ensure that no one can _________ when the machine is running.
Before the machine is switched on, ensure that no one can _________ when the machine is running.
5. They switched m________ every 10-12 miles. (--a horse that you ride on)
5. They switched m________ every 10-12 miles. (--a horse that you ride on)
5. They switched m________ every 10-12 miles. (--a horse that you ride on)
5. They switched m________ every 10-12 miles. (--a horse that you ride on)
通常,我们把传输层、网络层、数据链路层、物理层的数据依次称为() A: 帧(fram,数据包(packet),段(segment),比特流(bit) B: 段(segment),数据包(packet),帧(fram,比特流(bit) C: 比特流(bit),帧(fram,数据包(packet),段(segment) D: 数据包(packet),段(segment),帧(fram,比特流(bit)
通常,我们把传输层、网络层、数据链路层、物理层的数据依次称为() A: 帧(fram,数据包(packet),段(segment),比特流(bit) B: 段(segment),数据包(packet),帧(fram,比特流(bit) C: 比特流(bit),帧(fram,数据包(packet),段(segment) D: 数据包(packet),段(segment),帧(fram,比特流(bit)