预防接种的免疫学效果评价指标是（） _公卫执业医师_全学科试题题库

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预防接种的免疫学效果评价指标是（）
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Camping Camping wild is a wonderful way to experience the natural world and， at its best， it makes little environmental influence. But with increasing numbers of people wanting to escape into the wilderness， it is becoming more and more important to camp unobtrusively （不引人注目地） and leave no mark. Wild camping is not permitted in many places， particularly in crowded lowland Britain. Wherever you are， find out about organizations responsible for managing wild spaces， and contact them to find out their policy on camping and shelter building. For example， it is fine to camp wild in remote parts of Scotland， but in England you must ask the landowner's permission， except in national parks. Camping is about having relaxation， sleeping outdoors， experiencing bad weather， and making do without modern conveniences. A busy， fully-equipped campsite （野营地） seems to go against this， so seek out smaller， more remote places with easy access to open spaces and perhaps beaches. Better still， find a campsite with no road access： walking in makes a real adventure. Finding the right spot to camp is the first step to guaranteeing a good night's sleep. Choose a campsite with privacy and minimum influence on others and the environment. Try to use an area where people have obviously camped before rather than creating a new spot. When camping in woodland， a void standing dead trees， which may fall on a windy night. Avoid animal runs and caves， and possible homes of biting insects. Make sure you have most protection on the windward side. If you make a fire， do so downwind of your shelter， always consider what influence you might have on the natural world. Avoid damaging plants. A good campsite is found， not made — changing it should be unnecessary. ometimes you need to make electricity.（）

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某六层单元式住宅共54户，建筑面积为3949.62㎡。原设计方案为砖混结构，内、外墙均为240mm砖墙。现拟定的新方案为内浇外砌结构，外墙做法不变，内墙采用C20钢筋混凝土浇筑。新方案内横墙厚为140mm，内纵墙厚为160mm，其他部位的做法、选材及建筑标准与原方案相同。两方案各项指标见表2-1。表2-1设计方案指标对比表: 问题： 1.请计算两方案如下技术经济指标： (1)两方案建筑面积、使用面积单方造价各为多少?每平方米差价多少? (2)新方案每户增加使用面积多少平方米?多投入多少元? 2.若作为商品房，按使用面积单方售价5647.96元出售，两方案的总售价相差多少? 3.若作为商品房，按建筑面积单方售价4000元出售，两方案折合使用面积单方售价各为多少元?相差多少?

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