单项选择题
A.deeply as B.as deed as C.so deep as D.so deeply as
A.purchase order;commercial invoice B.commercial invoice;purchase order C.commercial invoice;proforma invoice D.proforma invoice;purchase order
A.divisible L/C;sight L/C B.sight L/C;divisible L/C C.divisible L/C:irrevocable L/C D.irrevocable L/C;divisible L/C