更多“第一心音与第二心音区别是______”相关的问题
解热镇痛药滥用的预防中，哪一个说法错误（）
A.对医务工作者进行再教育，加强药品管理，限制处方或零售数量
B.包装上明确标示其危害性及程度
C.加强对患者用药的正确引导和指导，普及合理用药知识
D.所有的非甾体抗炎药物均需要医生处方
E.加强对药品广告的严格管理，以免虚假广告误导患者
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SoBig. F was the more visible of the two recent waves of infection because it propagated itself by e-mail, meaning that victims noticed what was going on. SoBig. F was so effective that it caused substantial disruption even to those protected by anti-virus software. That was because so many copies of the virus spread (some 500,000 computers were infected) that many machines were overwhelmed by messages from their own anti-virus software. On top of that, one common counter-measure backfired, increasing traffic still further. Anti-virus software often bounces a warning back to the sender of an infected e-mail, saying that the e-mail in question cannot be delivered because it contains a virus. SoBig. F was able to spoof this system by "harvesting" e-mail addresses from the hard disks of infected computers. Some of these addresses were then sent infected e-mails that had been doctored to look as though they had come from other harvested addresses. The latter were thus sent warnings, even though their machines may not have been infected. Kevin Haley of Symantec, a firm that makes anti-virus software, thinks that one reason SoBig. F was so much more effective than other viruses that work this way is because it was better at searching hard drives for addresses. Brian King, of CERT, an internet-security centre at Carnegie-Mellon University in Pittsburgh, notes that, unlike its precursors, SoBig. F was capable of "multi-threading", it could send multiple e-mails simultaneously, allowing it to dispatch thousands in minutes. Blaster worked by creating a "buffer overrun in the remote procedure call". In English, that means it attacked a piece of software used by Microsoft’s Windows operating system to allow one computer to control another. It did so by causing that software to use too much memory. Most worms work by exploiting weaknesses in an operating system, but whoever wrote Blaster had a particularly refined sense of humour, since the website under attack was the one from which users could obtain a program to fix the very weakness in Windows that the worm itself was exploiting. One Way to deal with a wicked worm like Blaster is to design a fairy godmother worm that goes around repairing vulnerable machines automatically. In the case of Blaster someone seems to have tried exactly that with a program called Welchi. However, according to Mr. Haley, Welchi has caused almost as many problems as Blaster itself, by overwhelming networks with "pings" signals that checked for the presence of other computers. Though both of these programs fell short of the apparent objectives of their authors, they still caused damage. For instance, they forced the shutdown of a number of computer networks, including the one used by the New York Times newsroom, and the one organising trains operated by CSX, a freight company on America’s east coast. Computer scientists expect that it is only a matter of time before a truly devastating virus is unleashed.
A．sending them an overpowering number of messagesB．harvesting the addresses stored in the computersC．infecting the computers with an invisible virusD．destroying the anti-virus software of the computers
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的城市建立相对独立的平面坐标系统应当由国家测绘局审批。
A.20万人口以上 B.30万人口以上 C.40万人口以上 D.50万人口以上
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下列诗句中,不是出自王昌龄的是( )
A. 洛阳亲友如相问，一片冰心在玉壶。 B. 青山一道同云雨，明月何曾是两乡。 C. 但使龙城飞将在，不教胡马度阴山。 D. 愿得此身长报国，何须生入玉门关。
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市场价格和理论价格相比,理论价格是短期均衡价格,市场价格是长期均衡价格。()A．正确B．错误
市场价格和理论价格相比,理论价格是短期均衡价格,市场价格是长期均衡价格。( ) A．正确 B．错误
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使用乙炔气时，应注意（）。
A . A、周围不可有明火，避免产生电火花
B . B、操作人员须穿防静电服
C . C、房间应密闭
D . D、室内应有高湿度
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SCCPCH信道影响小区广播信道的覆盖范围。
A . 正确
B . 错误
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长骨纵径的生长进行于()
A．骨骺板
B．骨膜
C．骨干
D．干骺端
E．骨骺
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下列表述中哪项是错误的？
A.受日照辐射影响，空气从山坡吹向谷底，形成谷风
B.受地势影响，在山谷地带比平原地区更容易形成逆温层
C.在山地背风面，受涡流影响，大气污染要比迎风坡严重
D.盆地城市静风频率要远高于平原城市
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（）要有学术价值，即通过课题的研究可能解决前人没有研究过、未能解决或解决得不好的问题，推动学术的发展或技术的进步。
A.专著
B.学位论文
C.选题
D.专利
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收银员在受理银行卡交易时，须对银行卡进行审卡，审卡内容不包括（）。
A、卡片签名条上无“样卡”或“专用卡”等非正常签名的字样
B、卡片上有银联标识
C、卡片无打洞、剪角、毁改或涂改的痕迹。
D、信用卡还需审查卡的有效期
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石油库和罐区，铁路槽车卸油结束时，应打开鹤管透气阀向鹤管内进气。
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复式记账是对每项经济业务按相同金额在两个或两个以上的账户中同时登记，所涉及的账户是()。
A.负债账户
B.资产账户
C.相互联系的对应账户
D.总账与明细账账户
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题目内容
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参考答案
十点题库官方参考答案
（由十点题库聘请的专业题库老师提供的解答）
