引起急性心功能不全的原因，不包括A．输液过快B．进食减少C．急性心肌梗死(AMI)D

反补贴、反倾销和保障措施都属于贸易救济措施。反补贴、反倾销措施针对的是进口产品激增的情况，保障措施针对的则是价格歧视这种不公平贸易行为。

A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are manmade. Here are some virus prevention tips.

Do not open any files attached to an e-mail from an unknown, suspicious or untrustworthy source.

Do not open any files attached to an e-mail unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate（复制） themselves and spread through e-mail. Better be safe that sorry and confirm that they really sent it .

Do not open any files attached to an e-mail if the subject line is questionable or unexpected. If the need to do so is there always save the file to your hard drive before doing so.

Delete chain e-mails and junk e-mail. Do not forward（转寄） or reply to any of them. These types of e-mail are considered spam（垃圾邮件）, which contains lots of annoying advertisements and useless information.

Do not download any files from strangers.

Be careful when downloading files from the Internet. Ensure that the source is a legitimate（合法的）and reputable one. Verify（证实）that an anti-virus program checks the files on the download site. If you are uncertain, don’t download the file at all or download the file to a floppy（软盘）and test it with your own anti-virus software.

Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you’ll want to be protected. These updates should be at least the products virus signature files. You may also need to update the product’s scanning engine as well.

Back up（备份） your files on a regular basis. If a virus destroys your files, at least you can replace them with your backup copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.

小题1:This passage mainly tells us              .

A．What a computer virus is

B．how to use e-mail safely

C．how to use computers safely

D．how to prevent computer viruses小题2:Which of the following statements about computer virus is TRUE?

A．A computer virus is a kind of worm

B．Not all computer viruses are manmade

C．Computer viruses run according to our wishes

D．A computer virus is a program or piece of code.小题3: When we use e-mail, we should                .

A．open all the files we receive

B．open any file even if we don’t know what it is

C．not open any files if the subject line is questionable

D．forward or reply to junk e-mail.小题4:Which of the following statements is NOT true?

A．We’d better not down load any files from strangers.

B．We’d better download files from a legitimate and reputable source.

C．We should update our anti-virus software regularly.

D．We should store our backup copy in the same location as our work files.

20世纪80年代初，把党中央多年来酝酿的和平统一祖国的过乡创造性地概括为[ ]

A、江 * *

B、毛 * *

C、邓 * *

D、周恩来

C国太乐厨具有限公司（简称太乐公司）创办于1996年。近20年来，太乐公司运用成本领先战略，迅速提高市场占有率，在国内外享有较高的知名度。太乐公司集中全部资源，重点发展厨具小家电产品。公司利用与发达国家企业0EM合作方式获得的设备，进行大批量生产，从而获得规模经济优势。在此基础上，公司多次主动大幅度降低产品价格，使得生产该种产品的企业都无利可图，在市场上既淘汰了高成本和劣质企业，又令新进入者望而却步。 太乐公司实行24小时轮班制，设备的利用率很高。因而其劳动生产率同国外同类企业基本持平。同时，由于国内劳动力成本低，公司产品成本中的人工成本大大低于国外家电业的平均年水平。 对于一些成本高且太乐公司自身有生产能力的上游资源，如集成电路等。公司通过多种形式自行配置生产，这样，一方面可以大幅度降低成本，确保质量，降低经营风险。另一方面还可以获得核心元器件的生产和研发技术。而对于一些成本高、自身还不具备生产能力的上游资源，公司由于在其他各环节上成本低于竞争对手，也能够消化这些高成本投入的价格。近几年来，C国厨具小家电的销售数量每年递增30％左右，吸引了众多国内外大型家电企业加人。这些企业放弃了原有在大家电市场走的高端产品路线。以中低端的价格进入市场。这些企业认为，在厨具小家电市场，企业销售的都是标准化的产品，消费者大都对价格比较敏感，价格竞争仍然是市场竞争的主要手段。要求：

从市场情况和企业资源能力两个方面，简要分析太乐公司在C国厨具小家电市场实施成本领先战略的条件。

光亮单位坎德拉每平方米的符号是（）

A、lm

B、cd

C、cD.m-2

D、lx