D/P AT 30 DAYS AFTER SIGHT 和D/A AT 30 DAYS AFTER SIGHT有何区别,各有什么风险他们各有什么区别,在哪里有,

D/A AT 30 DAYS AFTER SIGHT 比采用D/P AT 30 DAYS AFTER SIHGT 承担风险 要大是吗 大哥大姐~D/P AT 30 DAYS AFTER SIGHT和D/A AT 30 DAYS AFTER SIGHT有何区别?各有什么风险?D/P AT 30 DAYS AFTER SIGHT和D/A AT 30 DAYS AFTER SIGHT有何区别?各有什么风险? D/P AT 30 DAYS AFTER SIGHT 和D/A AT 30 DAYS AFTER SIGHT有何区别,各有什么风险他们各有什么区别,在哪里有, D/P at 90 days after sight 和D/A at 90 days after sight 有何区别,各有何风险? D/A at 90days after 请教,付款方式：By D/A at 30 days after draft date怎么理解?谢谢 D/P 30 days after BL date,这个付款方式具体是什么意思? at 30 days after sight 与 at one month after date 的区别是什么? The weather will change ___the next few days.A.in B.for C.after D.at 信用证42C:DRAFTS AT SIGHT汇票上填：DRAFTS AT 30 DAYS AFTER SIGHT document against payment after 30 days 和30days D/PD/P after 30days 和30days 是不是30天和汇款交单 和30天内汇款交单的意思啊?那30天后汇款交单是什么意思呢?糊涂了我 His father will be back _____three days.A.at B.after C.in D.on 为什么选 D.on The weather will change （）the next few days. A.in B.for C.after D.at D/P at 30days 见单30天后付款交单30天后是多久阿？乞不是遥遥无期了吗？ I suppose we will know the result of the exam ____ two days.A.at B.in C.for D.after我选的D.为何不行? TT remittance at 30 days after AWB date,这句话指的是怎样的付款方式啊 we agree DP at sight after 30 days from the arrival of the 到底说的是怎么付款阿? 30 days credit after monthly statement