A company that has the use of a vehicle upon payment of a sum of money on a regular basis over a long period of time is using the finance service of （）

单项选择题Customers trading abroad in foreign currencies may protect against the exchange risk by arranging （）

A. a contract of international sale of goods 
B. a contract of marine insurance 
C. a forward contract to fix the exchange rate in advance
D. contract for the delivery of goods by installment

单项选择题A cheque payable to ABC Company is credited to the personal account of Mr. Gao. The bank （）

A. is correct in crediting the account
B. is merely doing what is requested by its customer
C. has committed an act of negligence
D. will make a claim on its principal