【单选题】【消耗次数：1】
在SET交易的参与者中，负责连接银行专用网络和Internet的是？
①
发卡银行
②
收单银行
③
支付网关
④
数字证书认证中心
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【判断题】
在网络商品直销和网络商品中介交易过程中，买卖双方、客户与交易中心、客户与银行、客户、交易中心、银行与认证中心都将彼此发生业务关系，从 而产生相应的法律关系。
①
正确
②
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