即期汇票，定期汇票，远期汇票和信用证这些术语，足以表现各种不同的付款方式吗？
Are the expressions of sight draft, time draft, usance draft and letter of credit adequate terms to express the different methods of payment?
即期汇票，定期汇票，远期汇票和信用证等专用语是否足以表述各种不同的付款方式呢？
Are the expressions of sight draft time draft usance draft and letter of credit adequate terms to express the different methods of payment!
即期汇票，定期汇票，远期汇票和信用证等专用语是否足以表述各种不同的付款方式呢？
Are the expressions of sight draft time draft usance draft and letter of credit adequate terms to express the different methods of payment!
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