Why is packet switching used in computer networks?

Why is packet switching used in computer networks? How many( )(packet) of sweets?There is only one packet. wlan switch is There is -----(many)suger in the packet 英文连接词why,where造句用连接词造句列如I can't feel where the light switch is. paper jam before supply switch or supply switch is broken switch why did you switch off the fridge?(同义句） 一般疑问句There is some flour in the packet. Display switch is set incorretly是什么意思? 一道 in the following four options,which service can not be provided by switch( )A packet framing B error detectionC error Correction D multiple types of link Why is in packet packet是什么意思 packet of My father is going to give me a red packet.改为同义句.My father is going to( )a red packet( )me. Touch switch is active.Keep hand off the scree. the packet of sweets is ten yuan.用ten yuan提问