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热水供应系统(hot water supply system)的含义是?

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第1题
The British SummerBritain is well known for its rainy climate. People joke that even in
The British SummerBritain is well known for its rainy climate. People joke that even in

The British Summer

Britain is well known for its rainy climate. People joke that even in the summer time the country never gets any sun and that the skies stay disappointingly grey even during the months of July and August. Last summer though, it was so hot that people could hardly believe it. British people weren't used to such high temperatures, so every day on the news there were stories about people struggling to work in such unusual weather conditions. Radio and television programmers also reminded everyone to drink more water and not to stay too long in the sun.

When the sun comes out, British people tend to spend time in their garden if they have one. It’s common to invite friends and neighbours around for a barbecue, where everyone sits outside and eats food like grilled meat (烤肉)and salads. There's always a back-up plan in case of rain though, and the meal sometimes has to be cooked in the kitchen and eaten indoors. People also spend a lot of time in parks during the summer, having picnics or playing sports. In every green area, there’s always at least one ice cream van, a kind of car that plays children’s music and sells ice creams. Towns like Blackpool and Brighton are popular for their beaches and amusement arcades(游乐场).People go there to swim, sunbathe and eat fish and chips. The water can be quite cold, though, and that’s why quite a lot of people prefer to go abroad for their summer holiday instead. Popular destinations include Spain, Germany and France: all countries that promise a lot of sunshine!

1、There is little sunshine in Britain in summer.()

A. True

B. False

C. Not Given

2、British people like to tell jokes about each other.()

A. True

B. False

C. Not Given

3、It was unusually hot last summer in Britain.()

A. True

B. False

C. Not Given

4、British people enjoyed the high temperatures of last summer.()

A. True

B. False

C. Not Given

5、The media advised people to enjoy the sunshine.()

A. True

B. False

C. Not Given

6、Most British people have a garden of their own.()

A. True

B. False

C. Not Given

7、People having a barbecue often have a plan against the rain.()

A. True

B. False

C. Not Given

8、Children like the music from the ice cream vans.()

A. True

B. False

C. Not Given

9、Blackpool and Brighton are known for their beaches.()

A. True

B. False

C. Not Given

10、People go to Spain in summer to enjoy the cooler sea water.()

A. True

B. False

C. Not Given

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第2题
热水给水系统根据不同的热水供应范围分为()。

A.生活热水给水供应系统

B.局部热水供应系统

C.集中热水供应系统

D.区域热水供应系统

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第3题
开式热水供应系统与热水供热管网连接时,冷、热水的压力相差要<0.1MPa。()
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第4题
高层建筑热水供应系统存在低层管道静水压力大的问题,应采用()的供水形式。

A.分散

B.分区

C.集中

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第5题
公共浴室热水供应系统配水点的水温不高于()。

A.45℃

B.60℃

C.50℃

D.55℃

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第6题
常年性热负荷热水供应系统的用热量与人们的()、()以及()有关。
常年性热负荷热水供应系统的用热量与人们的()、()以及()有关。

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第7题
在同一水溶液中,若同时存在K£«<£¯sup>与H£«<£¯sup>,K£«<£¯sup>有方向的水分子,迁向()。

A.阳极

B.阴极

C.中间极板

D.两极

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第8题
加热、供水和热水供应系统的金属管立管安装完成后,自检安装的管道坐标、标高、坡度和预留管口尺寸根据施工图,在确认精度后,调整所有支撑和吊架固定管并进行()试验。

A.传球

B.水压

C.气压

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第9题
设函数f(x)=my3</sup>+nx2</sup>y+l(x3</sup>+lxy2</sup>)为解析函数,则l=(),m=(),n=()。

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第10题
若两性物质结合了较多阳离子(如Ca2£«<£¯sup>、Mg2£«<£¯sup>、Zn2£«<£¯sup>等),则等电点pH升高。()
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第11题
求limx→0(1-x2</sup>-ex2</sup>)/sin4</sup> 2x
求limx→0(1-x2</sup>-ex2</sup>)/sin4</sup>2x

求limx→0(1-x2-ex2)/sin42x

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