In the payment of international trade payment, the functions and characteristics of bills are（）.
A. main means of circulation
B. main means of payment
C. negotiable and transferable
D. bond certificate
E. credit instruments
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Which of the following bills is divided into prompt and after sight？（）
A. Cheque
B. Promissory note
C. Bill of exchange
Documentary draft
E. Bank note
In a confirmed and irrevocable letter of credit, the bank that bears the first payment responsibility is（）.
A. negotiating bank
B. confirming bank
C. issuing bank
D. advising bank
E. all relevant banks
Which of the following payment methods uses commercial credit？（）
A. Remittance
B. Collection
C. L/C
D. Exchange
E. D/P
The main differences between standby letter of credit and general documentary credit are as follows.（）.
A. Standby letter of credit belongs to commercial credit, while documentary credit belongs to bank credit
B. The terms of bank payment are different
C. The scope of application is different
D. The documents required by the beneficiary for payment are different
E. The applicable legal norms and international practices are different
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