（2）跟单托收种类 即期付款交单(DOCUMENT AGAINST PAYMENT AT SIGHT)：俗称D/P AT SIGHT，指开出的汇票是即期汇票，进口商见票，只有付完货款，才能拿到商业单据。
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document against payment at sight 即期付款交单; 见票付款交单 document against payment bill 付款时交还抵押单的押汇票 ..
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