【单选题】
Which type of social-engineering attack uses normal tele phone service as the attack vector？___
A. smishing
B. dialing
C. phishing
D. vishing
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答案
D
解析
暂无解析
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【判断题】
海运舱单录入申报只包括舱单一项，以包裹单号、录入日期作为主索引键对用户所要预录入的舱单进行唯一性检查，如果预录入库中已有该舱单数据，说明该舱单已向海关申报，就不允许用户再次录入相同舱单
A. 对
B. 错
