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
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There'snodoubtthatthisisnottheway____Icamelasttime.
—Doyoumind__________here?
—________.
Physicsisthepresentdayequivalentof____usedtobecallednaturalphilosophy,from____mostofpresentdaysciencearose.
Nancy:MayIseeyourdrivinglicenseandvehicleregistrationcard,please?
Dick:______.
Dr.Yangworked______threedaysago.