1996 年 2 月, _______ 共同发起制定了保障在因特网上 B to C 模式下进行安全电子交易的 SET 协议。
— What would you like to have, meat or fish?
— _____________________.
— ___________________
— Once or twice a week.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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