井口防喷器组如果四通下面安装有半封闸板，则它主要用来（）。-我要搜题网

[不定项选择题]共用题干 Things to Know about the UK

1 From Buckingham Palace to Oxford, the UK is loaded with wonderlul icons (标志）of
past eras.But it has also modernized with confidence.It's now better known for vibrant（充
满活力的）cities with great nightlife and attraction.Fashions, fine dining, clubbing,
shopping一the UK is among the world's best.
2 Most people have strong preconceptions about the British.But if you're one of these
people,you'd be wise to abandon those ideas.Visit a nightclub in one of the big cities,a
football match,or a good local pub and you might more readily describe the English people
as humorous and hospitable.It's certainly true that no other country in the world has more
bird-watchers,sports supporters,pet owners and gardeners than the UK.
3 Getting around England is pretty easy.Budget(廉价的)airlines like Easyjet and Rynnair
fly domestically.Trains can deliver you very efficiently from one major city to another.Long
distance express buses are called coaches.Where coaches and buses run on the same
route,coaches are more expensive(though quicker)than buses.London's famous black
cabs are excellent but expensive.Minicabs are cheaper competitors, with freelance（个体
的）drivers.But usually you need to give a call first.London's underground is called the
Tube.It's very convenient and can get you to almost any part of the city.
4 The UK is not famous for its food.But you still need to know some of the traditional
English foods.The most famous must be fish and chips.The fish and chips are deep fried in
flour.English breakfast is something you need to try.It is fried bacon,sausages,fried
eggs,black pudding,fried tomatoes,fried bread and baked beans,with toast and a pot of
tea.Other things like shepherd's pie and Yorkshire pudding are also well-known as a part of
English food culture.
5 Pubbing and clubbing are the main forms of English nightlife, especially for the young.
Pubbing means going to a pub with friends,having drinks,and chatting.Clubbing is
different from pubbing and includes going to a pub,or a place of music,or a bar,or any
other places to gather with friends.Clubbing can be found everywhere.Usually there is
some kind of dress code for clubbing,such as no jeans,no sportswear,or smart clubwear,
while pubbing is much more casual. Paragraph 2_________
A.Education
B.People
C.Transport
D.Drinks
E.Food
F.Nightlife

[单项选择]井口防喷器组如果四通下面安装有半封闸板，则它主要用来（）。A. 正常关井与压井B. 在紧急情况时关闭，修理上部的井控设备C. 方便试压D. 不需要人员爬高，方便更换闸板

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[单项选择]井口防喷器组如果四通下面安装有半封闸板，则它主要用来（）。
A. 正常关井与压井
B. 在紧急情况时关闭，修理上部的井控设备
C. 方便试压
D. 不需要人员爬高，方便更换闸板