多项选择题 下列对受益人无追索权的信用证有：（）

多项选择题 自由议付国际信用证是指可以在（）的任何银行议付的信用证。

多项选择题 A beneficiary presents complying documents to a confirming bank under a documentary credit available by deferred payment.The beneficiary requests that the confirming bank purchase the documents and prepayag ainst its undertaking.In accor dance with UCP600，which of the following may be the correct course（s） of action for the confirming bank？（）