题目内容：
（ ）is the written promise of a bank to act at the request and on the instruction of the applicant and to undertake payment to the beneficiary in the amount specified in the credit
参考答案：
答案解析：
单选题：（ ）is the written promise of a bank to act at the request a
- 题目分类：专业英语
- 题目类型：单选题
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