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[填空题]How to protect your computer from being attacked by a virus:
Be sure to have a good antivirus program and update it regularly. You will also want to make sure that your Internet browser and operating system have had all the necessary security patches (补丁) applied.
Then, you may think you have a virus, but how do you really tell You scan your system for viruses with a software program. If you don’t have antivirus software, you can purchase it online or you can use Panda Software’s free Active Scan that will scan you computer and report on any infections.
If the virus scan finds an infection, it will give you the name of the virus or viruses that you have contracted. If your computer is infected, you need to take immediate action. Depending on the severity of the virus, the health of your computer as well as the security of your computer data may be at risk. Look up the virus at one of the antivirus manufacturers’s websites.

What will happen if the virus is v

热门试题:

[多项选择]库欣病的病因是()
A. 垂体ACTH腺瘤
B. 肾上腺皮质腺瘤分泌大量皮质醇
C. 下丘脑-垂体功能紊乱
D. 非内分泌腺肿瘤组织分泌ACTH
E. Meador综合征
[判断题]未纳入年度设备检修计划的工作,各运维单位需编制非年度计划项目检修必要性分析报告,经本单位运分管领导签字、省公司专业部门审核通过、省公司运行协调会通过,方可纳入月度检修计划。
A.正确
B.错误
[判断题]社会保险水平应当与社会经济发展水平和社会承受能力相适应。
A.正确
B.错误
[单项选择]This treatment works for people of all ages, for the baby () for the old man.
A. as far as
B. as much as
C. as long as
D. as well as
[单项选择]工程项目按(),分为竞争性项目、基础设施项目和公益性项目。
A. 行业
B. 经济特征
C. 项目的性质
D. 投资来源
[判断题]文档页面的主题以及主题元素:颜色、字体和效果都可以自定义并保存,以供后续使用。
A.正确
B.错误
[不定项选择题]共用题干 第三篇

The Changing Middle Class

The United States perceives itself to be a middle一class nation.However,middle class is not a real desig-
nation,nor does it carry privileges(特权).It is more of a perception,which probably was as true as it ever
could be right after World War II.The economy was growing;more and more people owned their own homes;
workers had solid contracts with the companies that employed them;and nearly everyone who wanted a higher
education could have one.Successful people enjoyed upward social mobility. They might have started out
poor,but they could become rich.Successful people also found that they had greater geographic mobility.In
other words,they found themselves moving to and living in a variety of places.
The middle class colleetively holds several values and principles. One strong value is the need to earn
enough money to feel that one can determine one's own economic fate.In addition,middle-class morality(道
德观)embraces principles of individual responsibility,importance of family,obligations to others,and
believing in something outside oneself.
But in the 1990s those in the middle class found that there was a price for success. A U.S.News&
World Report survey in 1994 indicated that 75 percent of Americans believed that middle class families could
no longer make ends meet. Both spouses now worked,as did some of the children;long commutes became
routine;the need for child care put strains on the family;and public schools were not as good as they once
were.Members of the middle class were no longer financing their lifestyles through earnings but were using
credit to stay afloat. The understanding of just what middle class meant was changing. In the years after World War II,the middle class were_________________.
A.overburdened and in debt
B.hard working and doubtful
C.happy and full of hope
D.young and upset
[多选题]财务内部收益率法与财务净现值法的主要区别在于(  )。
A.财务内部收益率法不需要预先设定一个折现率
B.财务净现值是一个数额,财务内部收益率是一个比率
C.财务内部收益率比财务净现值有更直观的吸引力
D.财务净现值法需要预先设定一个折现率
E.财务净现值比财务内部收益率更直观
[判断题]列车网络控制权转移的过程包括:1.原主控端投入主控钥匙,原主节点降级为弱节点,并控制网络继续运行;2.新主控端投入主控钥匙,该节点升级为主节点;3.弱节点(原主节点)取消对所有节点命名,成为从节点;4.新主节点对所有节点命名并控制网络运行。
A.正确
B.错误
[判断题]6号线紧急停车功能解除依照哪里激活哪里取消原则执行
A.正确
B.错误
[单选题](2019年)根据增值税法律制度的规定,下列关于增值税纳税义务发生时间的表述中,正确的是( )。
A.委托他人代销货物的,为货物发出的当天
B.从事金融商品转让的,为金融商品所有权转移的当天
C.采用预收货款方式销售货物,货物生产工期不超过12个月的,为收到预收款的当天
D.采取直接收款方式销售货物的,为货物发出的当天
[多选题]假设有一项换灯泡作业,以下属于作业过程中存在的危害因素有( )。
A.上半身探出过多
B.站在梯子的最上两级
C.带电作业
D.用力过大重心不稳
[单项选择]按照( )划分,产业政策一般包括产业结构政策、产业组织政策、产业技术政策和产业布局政策等内容。
A. 政策任务
B. 政策目标
C. 政策需求
D. 政策性质
[简答题]四肢长管状骨骨折的进一步检查
[判断题] 连续更换两个轨枕可以在维修天窗内进行。
A.正确
B.错误
[填空题]摘录.引用密件中属于国家秘密的内容,应当以其中____()____和______()__做出标识。
[判断题]工作票采用手工方式填写时,应用黑色或蓝色的钢(水)笔或圆珠笔填写和签发,至少一式三份。
A.正确
B.错误
[单项选择]在利用Excel求解决策问题时,常用到一些函数,请问,当计算两个向量乘积(即求两组数的对应乘积之和)时用以下哪个函数?()
A. PRODUCT
B. SUMPRODUCT
C. SUM
D. EXP
[判断题]高层建筑火灾作为建筑火灾中的一种,其火灾的发展过程具有建筑物室内火灾发展的典型特征,一般都有火灾初起、发展和下降三个阶段。(  )
A.正确
B.错误
[多项选择]患者女,30岁,因“四肢关节肿痛伴发热2个月,癫痫样发作2次”来诊。查体:意识模糊。实验室检查:血常规三系减少,ESR120mm/h,RF(+),ASO(-),尿蛋白C(++)。抗生素治疗无效。不恰当的治疗有()
A. 抗感染治疗
B. 小剂量糖皮质激素
C. 大剂量糖皮质激素
D. 糖皮质激素冲击治疗
E. 环磷酰胺
F. 血浆置换
[判断题]( )顺时针旋转自力式调压阀调节螺钉时,阀门开度减小。
A.正确
B.错误
[单选题]YD07CG01100135kV电能计量柜的电压互感器二次应采用()。
A.二台接成V.v形接线
B.三台接成Y.y形接线
C.三台接成YN.yn形接线
D.三台接成Δ.Δ形接线
[单项选择]()是聘用合同的主要期限种类,它适用于事业单位中的大多数岗位。
A. 短期合同
B. 中期合同
C. 长期合同
D. 项目合同
[单项选择]沿着下列哪一位航海家的船队开辟的航线,你可以一路领略大西洋.太平洋和印度洋上的风光?()
A. 迪亚士
B. 达•伽马
C. 麦哲伦
D. 哥伦布
[判断题]汽轮机启动中暖机的目的是为了提高金属部件的温度。( )
A.正确
B.错误
[判断题]对机械、绝缘性能产生疑问或发现缺陷的安全工器具需要进行试验。
A.正确
B.错误
[填空题]数据库系统的3级模式结构由外模式、 【13】 和内模式组成。
[单项选择]根据《会计法》第二十八条的规定,()应当保证会计机构、会计人员依法履行职责,不得授意、指使、强令会计机构、会计人员违法办理会计事项。
A. 会计机构负责人
B. 总会计师
C. 各级人民政府财政部门
D. 单位负责人
[单项选择]{{B}}Passage One Questions 26 to 28 are based on the passage you have just heard.{{/B}}
A. It becomes bigger.
B. It becomes more expensive.
C. It becomes cheaper.
D. It becomes much safer.
[单项选择]下列关于函数依赖性不正确的是( )。
A. 若X→Y,X→Z,则X→YZ
B. 若XY→Z,则X→Z,Y→Z
C. 若X→Y,WY→Z,则XW→Z
D. 若X→Y,Y→Z,则X→Z
[判断题]和机械传动相比,液力机械传动具有结构简单,传动效率高的优点。
[单项选择]患者男,28岁。腰背痛2年,开始时腰骶部疼痛向双臀部放射。曾在当地医院诊断为腰椎间盘突出症。后腰骶部疼痛减轻,背痛加重,并逐渐出现驼背畸形,双髋活动部分受限,上三楼后气喘,呼吸困难。检查发现脊柱活动明显受限,肺活量明显减少,Thomas征阳性,血液检查RF(-),ASO200U,ESR54mm/h,HLA-B27(+),血常规正常。初步诊断应首先考虑()
A. 类风湿关节炎
B. 化脓性脊椎炎
C. 强直性脊柱炎
D. 脊柱结核
E. 腰背肌“劳损”
[单选题]在定点二进制运算中,用来实现减法运算一般通 过
A. 原码运算的二进制减法器
B. 补码运算的二进制减法器
C. 补码运算的二进制加法器
D. 补码运算的十进制加法器
[简答题]对消防器材及设施我们应( )。
[单选题]近日,经国家市场监管总局批准,“国家分接开关产品质量监督检验中心( )”正式成立。这是我国首家分接开关领域国家级质检中心。
A. 贵州
B. 沈阳
C.湖南
D.广西
[单选题]可以测量变压器油温的是 ()
A. 铭牌
B. 信号式温度计
C. 吸湿器
D. 油表
[单选题]依据《安全生产法》,事故调查处理应当按照( )的原则,查清事故原因,查明事故性质和责任。
A.实事求是、尊重科学
B.公开、公正、公平
C.及时、准确、合法
D.科学严谨、依法依规、实事求是、注重实效

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