C. 跨国银行提供的服务包括开立信用证、买卖外汇、开立银行承兑、接受欧洲货币储存、提供欧洲货币贷款以及发行欧洲货币债券。D. 跨国银行提供的服务包括开立信用证、买卖外汇、开证行承兑、接受欧洲货币储存、提供欧洲货币贷款以及发行推销欧洲货币债券。4. Within 30 days after the signing and coming into effect of this contract, the Buyer shall proceed to pay the price for the goods to the Seller by opening an irrevocable L/C for the full amount of US$30,000 in favor of the Seller through a bank at export point so that the Seller may draw the sum in due time. A. 卖方须于本合同签字并生效后三十天内通过出口银行开立以卖方为收益人的不可撤销