题干

 近年来,地质灾害频繁发生,对人们的生命财产造成了极大的危害,灾后,如果不及时采取防疫措施,还会发生严重疫情。请根据急救和防疫的有关知识回答下列问题:
(1)某人下肢受伤,血液呈暗红色,连续不断地从伤口流出,首先要拨打电话“120”,紧急呼救,同时应该用指压止血法或加压包扎止血法在伤口的____ 端压迫止血。 如果大量失血,要输血应根据输____ 的原则进行。
(2)在预防传染病的措施中,为了防止发生疫情而接种疫苗属于____ ,使用消毒液进行大面积消毒属于____ 。
(3)接种疫苗能刺激人体产生相应的____ ,从而提高对特定传染病的抵抗能力,这属于人体的特异性免疫。疫苗通常是用杀死的或减毒的____ 制成的生物制品.

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远心    ,同型血,保护易感人群,切断传播途径,抗体   ,病原体

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    Everybody hates it, but everybody does it. A recent report said that 40%of Americans hate tipping. In America alone, tipping is a $ 16 billion-a-year industry. Consumers acting politely ought not to pay more than they have to for a given service. Tips should not exist. So why do they? The common opinion in the past was that tips both rewarded the efforts of good service and reduced uncomfortable feelings of inequality. And also, tipping makes for closer relations. It went without saying that the better the service, the bigger the tip.

    But according to a new research from Cornell University, tips no longer serve any useful function. The paper analyzes numbers they got from 2,547 groups dining at 20 different restaurants. The connection between larger tips and better service was very weak. Only a tiny part of the size of the tip had anything to do with the quality of service.

    Tipping is better explained, by culture than by the money people spend. In America, the custom came into being a long time ago. It is regarded as part of the accepted cost of a service. In New York restaurants, failing to tip at least 15% could well mean dissatisfaction from the customers. Hairdressers can expect to get l5%-20%, and the man who delivers your fast food $ 2. In Europe, tipping is less common. In many restaurants the amount of tip is decided by a standard service charge. In many Asian countries, tipping has never really caught on at all. Only a few have really taken to tipping. According to Michael Lynn, the Cornell papers' author, countries in which people are more social or outgoing tend to tip more. Tipping may reduce anxiety about being served by strangers. And Mr. Lynn says, “In America, where people are expressive and eager to mix up with others, tipping is about social approval. If you tip badly, people think less of you. Tipping well is a chance to show off.”