保安员在门卫值勤时,对携带物品进入客户单位的人员,只需查验证件不需检查携带物品
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--Can I speak to Mr Smith, please?
--_________. He is giving a talk at a meeting.
You'd better stop doing the job if it goes______ your will .
电子商务网站建设的核心是()
单钥密码体制的算法包括()
名词解释:广义电子商务法