1.考虑传真机的性能决定传真机性能高低的技术指标目前仅有三项:发送时间、灰度级和清晰度。对于发送时间来说,它是指传真发送一项标准A4尺寸的稿件所需要的时间,当然是越短传送效率越高,而且如果每次发送的文件越多,所花费的电信费用也会越低,我们一般应选用传送时间不超过15秒的传机为宜;对于灰度级, 1. Consider the performance of fax machines Determine the level of performance of fax machines, there are only three technical indicators: the sending time, gray scale and clarity. For sending time, it refers to the time it takes for a fax to send a standard A4 size document, of course, the shorter the transfer efficiency, and the more the document is sent at each time, the more it will cost Low, we generally should be used transmission time is not more than 15 seconds of the transfer machine is appropriate; for the gray level,