小于六月龄的婴儿宜选用蛋白质含量多少的配方奶粉() A.12%~18% B. C.1

题型:单项选择题

问题:

小于六月龄的婴儿宜选用蛋白质含量多少的配方奶粉()

A.12%~18%

B.<12%

C.18%~25%

D.25%~33%

E.>33%

考点:职业卫生(医学高级)流行病学流行病学题库
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Look! Here _____ another bus. Let's get on it.[ ]

A. coming  

B. is coming  

C. come  

D. comes

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实用主义教育学的代表人物是美国的(),其主要代表著作是《()》。

题型:单项选择题

阅读理解

     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, fullyequipped 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, avoid 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.

1. You needn't ask for permission when camping in ________.

A. national parks in England

B. most parts of Scotland

C. crowded lowland Britain

D. most parts of England

2. The author thinks that a good campsite is one ________.

A. with easy access

B. used previously

C. with modern conveniences

D. far away from beaches

3. The last paragraph mainly deals with ________.

A. protecting animals

B. building a campfire

C. camping in woodland

D. finding a campsite with privacy

4. The passage is mainly about ________.

A. the protection of campsites

B. the importance of wild camping

C. the human influence on campsites

D. the dos and don'ts of wild camping

题型:单项选择题

在网管维护管理中,有插入告警操作。试说明它的用途。

题型:单项选择题

下列关于开式热水供应系统膨胀管的做法,错误的是______。

A.在北方地区,对膨胀管进行保温设置
B.水加热器传热面积为20m2的系统,设计膨胀管管径为50mm
C.膨胀管上未装设检修阀
D.两台水加热器合用一根膨胀管引至屋顶的消防高位水箱,其出口距水箱水面的高度为150mm

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