______ is the bank that issues the letter of credit at the request of an applicant and sends it to the advising bank. A. Confirming bank B. Negotiating bank C. Reimbursing bank D. Issuing bank
【单选题】听力原文: How much can you say about air pollutant? At first lets have a look at a useful definition of it. A pollutant is a compound added directly or indirectly by humans to the atmosphere, and in such ...