企源知识库

After the contract is signed, we shall open ____ the Bank of China here an irrevocable L/C at sight in your favor.
A、with
B、at
C、by
D、in?
【正确答案】：A
【题目解析】：句意：合同签订后，我们将向中国银行开立以你方为受益人的不可撤销的即期信用证。