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The telephone system is no longer operative.

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编程序逻辑控制器PLC-5/20、三个LON/SLC回路、PEGASYS系统、现场设备  F&G CONTROL SYSTEM01&02、可编程序逻辑控制器PLC-5/20、三个LON/SLC回路、PEGASYS系统、现场设备  F&G CONTROL SYSTEM01&02、编程序逻辑控制器PLC-5/20、PEGASYS系统、现场设备  F&G CONTROL SYSTEM01&02、三个LON/SLC回路、PEGASYS系统、现场设备  
the telephone company cut all the telephone lines  the police stored false information in Stoll' s computer system  Stoll told the police everything he knew  Stoll spent lots of time and efforts  
running  moving  rotating  working  
broken away    broken out    broken into    broken down  
NYC—LON  YMQ—LON  NYC—DUB  YMO—DUB  
NYC—LON  YMQ—LON  NYC—DUB  YMQ—BRU  
the telephone company cut all the telephone lines  the police stored false information in Stoll' s computer system  Stoll told the police everything he knew  Stoll spent lots of time and efforts  
F&GCONTROL SYSTEM01&02  LON/SLC回路  PEGASYS系统  PLC-5/20  
adding  to have added  to add  added  
running  moving  rotating  working  
PEK  BJS  CAN  LON  
LON——010贷款自动扣款收回利息回单  LON——011贷款自动扣款收回本金回单  LON——012贷款联机扣款收回本息清单  LON——013收回贷款本息清单(日报)  LON——027应计贷款拖欠明细表  
清除探头故障  更换逻辑控制器  隔离接地故障的原因及修理  修理LON故障  
The Internet can only be used to link computers with same operating system  The Internet can be used to connect computers with different ISP  You must have a telephone line to connect to the Internet  You must have a modem to connect to the Internet  
has been put into actual use  was first put into actual use in 1977  had been repeatedly experimented on before 1977  was put on experiment in 1977  
BHC  LDN  LON  LD