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问题:

AT 30DAYS AFTER SIGHT 和 D/A AT 30DAYS AFTER SIGHT

答案:

D/P AT 30DAYS AFTER SIGHT是指在卖方见票后30天付款,付款后再交单,而D/A AT 30DAYS AFTER SIGHT是指在卖方见票承兑后即可交单,30天后再付款,前者风险低于后者。