送交者: BIGBEN 于 2006-4-01, 13:42:53:
回答: 如果他不出示呢? 由 xinku 于 2006-4-01, 12:55:10:
When there is doublt, when there is an investigation, you are always asked to provide your origianl data to back your claim.In the US, it is required that the original data be ketp for certain years (I don't remember how many).