单项选择题
A.纸张潮湿 B.充电辊故障 C.调色剂类型错误 D.输出滚筒故障
A.USB B.SCSI 3 C.IEEE 1284 D.SERIAL DB 15
A.SPP B.ECP(Extended Capabilities Port) C.EPP(Enhanced Parallel Port) D.UPP
A.Jeweler’s cloth B.Silicone spray C.An emery cloth D.Contact cleaning solution
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