无论是自然损耗所出现的故障，还是人为损坏所出现的故障，一般可归结为电路接点开路，电子元器件损坏和软件故障三种故障。
1、正确正确
暂无解析
There'snodoubtthatthisisnottheway____Icamelasttime.
—Doyoumind__________here?
—________.
Physicsisthepresentdayequivalentof____usedtobecallednaturalphilosophy,from____mostofpresentdaysciencearose.
Nancy:MayIseeyourdrivinglicenseandvehicleregistrationcard,please?
Dick:______.
Dr.Yangworked______threedaysago.
