【单选题】From Mr. Davis's introduction, we know that ____.
A.
a weak grip shows that you are shy
B.
a firm handshake shows that you are confident
C.
holding hands in public is impolite
【简答题】I. Introduction Knowing _________________________ 1 is the most important in presenting products.
【单选题】Follow _____________, please. [ ]
【简答题】Irrevocable Letter of Credit
【简答题】Our terms of payment are by irrevocable L/C payable by sight draft against presentation of shipping document.
【简答题】IRREVOCABLE LETTER OF CREDIT
【单选题】血中激素浓度很低,而生理效应十分明显是因为