任何情况下，一定不要签署任何文件确认加油方取样的正确性。
Do NOT at any point sign any documents to confirm correctness of suppliers samples.
自营职业者：商业注册文件确认公司所有人以及公司开始营业的日期。
If self employed: business registration documents confirming the business owner's name and the date the business started trading.
无论您何时更改文件，您都可以通过在签出时声明一个活动来确认您进行更改的原因。
Whenever you change a file, you identify the reason you are making that change by declaring an activity at checkout time.
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