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You are developing a Web page. The user types a credit card number into an input control named cc and clicks a button named submit. The submit button sends the credit card number to the server. A JavaScript library includes a CheckCreditCard function that returns a value of true if the credit card appears to be valid, based on its checksum. You need to ensure that the form cannot be used to submit invalid credit card numbers to the server. What should you do?()
The mechanisms for distributing LDP are:()
空白票据是出票人在签发票据时,有意将票据上应记载的事项不记完全,留持票人以后补充的票据。又称未完成票据。
在境内外币支付业务中,系统发生故障,无法正常处理往来账业务,应按照()原则,立即报告营运和技术部门。
中西桥加分考试培训每门科目为()课时
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气体灭火系统按加压方式分为()。
23#W02管壳程走的介质为()
农业推广沟通的认同过程一般要经历哪些阶段?
神经一肌接头处的化学递质是()
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