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Electronic mail has become an extremely important and popular means of communication. The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects. The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of elect A. a machine that can be attached to your computer B. a button that you can make a choice to read or not to read C. a software that you can play a computer game D. an e-mail that says some good words to you [单选题]精测网分（）和高程控制网。
A.平面控制网 B.立体控制网 C.高低控制网 D.水平控制网 [判断题].(判断题)不安全食品是指不符合食品安全标准的食品。( )
A.正确 B.错误 [单选题]企业如果以招聘的形式参加校园招聘会,为提高招聘质量,可实施()。
A.统一的企业内面试 B.深入的电话访谈 C.单独的校园内面试 D.先笔试,后面试 [单选题]
272/603、 导爆管起爆网路的优点是( )。 A. 分段数不受限制 B. 需要计算起爆网路的电阻 C. 没有检测网路完好性的有效手段 D. 难以选择起爆站 [判断题]直流驱动电源主要由整流模块、监控模块、绝缘监测、电池巡检及充放电管理模块、驱动蓄电池组、馈线回路等构成
A.正确 B.错误 [单项选择]在自然灾害中，造成损失最为惨重的是（）
A. 洪涝 B. 旱灾 C. 地震 D. 泥石流 [单选题]下列除哪项外均为阴虚潮热的表现
A.午后低热 B.午后热甚 C.夜间低热 D.五心烦热 E.骨蒸发热 [判断题]营销服务场所应装设火灾自动报警装置或固定灭火装置。
A.正确 B.错误 [多选题]从业人员有权（），生产经营单位不得降低其工资、福利等待遇或者解除与其订立的劳动合同。
A.对本单位安全生产工作中存在的问题提出批评、检举、控告或者拒绝违章指挥、强令冒险作业 B.对本单位的安全生产工作提出建议 C.在紧急情况下停止作业或者采取紧急撤离措施 D.没有及时听从指挥号令 [单项选择]病人感到不复存在的肢体有牵拉感，疼痛等感觉，称为（）
A. 感觉过敏 B. 感觉减退 C. 错觉 D. 幻觉 我来回答: 提交
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