[单选] A Windows Communication Foundation (WCF) service only accepts messages that are signed and encrypted. A client application is not receiving expected responses from the service. You need to enable logging to verify that the messages from the client are signed and encrypted. You also need to see what each message looks like before the message body is deserialized into a NET object. What should you do?（）

泛化 某企业2008年8月1日赊销一批商品，售价为120000元（不含增值税），适用的增值税税率为17%。规定的现金折扣条件为2/10，1/20，n/30，计算现金折扣时考虑增值税。客户于2008年8月15日付清货款，该企业收款金额为（）元。 下面做法不正确的是（）。 禁止婴儿在有光滑的地面、台阶、玻璃等材料的场地嬉戏。 可以带婴儿到动物园的各种动物前玩弄动物。 禁止婴儿拿超市的颗粒样食物塞入口中以防窒息。 禁止婴儿攀爬自动扶梯和护栏。 目前国内科技对经济的贡献率约为（）。 本票是出票人签发的，命令付款人在见票时无条件支付确定的金额给收款人或持票人的票据。在我国，本票特指银行本票。 A Windows Communication Foundation (WCF) service only accepts messages that are signed and encrypted. A client application is not receiving expected responses from the service. You need to enable logging to verify that the messages from the client are signed and encrypted. You also need to see what each message looks like before the message body is deserialized into a NET object. What should you do?（）