双气囊三腔管每次放气时间为（）。

A、Usance Credit

B、Sight Credit

C、Acceptance Credit

D、Deferred Payment Credit

(1)( ) by sight payment

(2)( ) by deferred payment

(3)( ) by acceptance

(4)( ) by negotiation

The payment is made by an irrevocable()letter of credit in our favor.

A、 light

B、 bright

C、 sight

Sight credits mean that the issuing bank effects payment or negotiation immediately upon receipt of the drafts and/or other documents that are in conformity with the credit stipulations.( )

What is the definition of " honour" ？

"Honour" means that the issuing bank undertakes:

a. to ______ at sight if the credit is available by sight payment.

b. to ______ a deferred payment undertaking and ______ at maturity if the credit is available by deferred payment.

c. to ______ a bill of exchange ("draft" ) drawn by the beneficiary and ______ at maturity if the credit is available by acceptance.