boiler pilot burning pump怎么翻译

When coal is burned in a boiler, two kinds of ash by-products are produced: a heavy bottom ash and a fine-as-powder fly ash. About 10 to 15 percent of the coal by-product is bottom ash which is used like sand on streets and highways covered with ice, and also on highways as paving material.
It is the fly ash, however, that is receiving much attention. Once considered a waste, fly ash is now regarded as a natural resource in the United States. It can be placed in some lower places, where it is compacted and covered with soil, for the seeds of various grasses and plants to be placed in the soil to make the land productive.
Fly ash may be added to concrete to build roads and other kinds of buildings, taking the place of the cement up to 20 percent. As a by-product of burned coal, fly ash requires no extra energy to be produced, while cement production requires great amounts of energy.
Besides, the technology is able to take out some useful minerals from the fly ash, which is still a very expensive process today. But the time may come when it is cheaper to take out these products from ash than to mine new supplies.
小题1: The bottom ash can be put on icy streets________.

A．in order to rebuild them	B． in order to make them colourful
C．so that people can walk on them	D．so that cars can run faster

小题2:The fly ash_______ bottom ash.

A．has the same use as	B． is more expensive than
C．has more uses than	D．is much cheaper than

小题3:The fly ash can be used to________.

A．grow various plants	B． take the place of soil
C．cover productive land	D．make more productive land

小题4: Which of the following is right?

A．To produce fly ash, some extra coal is to be burned.

B． Fly ash is made while producing cement.

C．It takes less energy to produce fly ash than cement.

D．Fly ash is a costless by-product.

小题5:The word “mine” in the last sentence of the passage means_______.

A．to buy things from other countries

B． to search for useful materials in the mountains

C．to dig deeply into the ground to get useful materials

D．to take out certain materials from other things

boiler rooms are often dirty and steamy，but this one is clean and cool.fox point is a very new 47­unit living building in south bronx，one of the city’s poorest areas.two­thirds of the people living there are formerly (以前) homeless people，whose rent is paid by the ***.the rest are low­income families.the boiler room has special equipment，which produces energy for electricity and heat.it reuses heat that would otherwise be lost to the air，reducing carbon emissions(碳排放)while also cutting costs.
fox point is operated by palladia，a group that specializes in providing housing and services to needy people.palladia received support from enterprise community partners (ecp)，which helps build affordable housing by providing support to housing developers.
ecp has created national standards for healthy，environmentally (环境方面) clever and affordable homes which are called the green communities standards.these standards include water keeping，energy saving and the use of environmentally friendly building materials.meeting the standards increases housing construction costs by 2%，which is rapidly paid back by lower running costs.even the positioning of a window to get most daylight can help save energy.
michael bloomberg，new york’s mayor，plans to create 165,000 affordable housing units for 500,000 new yorkers.almost 80% of new york city’s greenhouse gas emissions come from buildings，and 40% of those are caused by housing.so he recently announced that the city’s department of housing and preservation and development (dhpd)，whose duty is to develop and keep the city’s supply of affordable housing，will require all its new projects to follow ecp’s green standards.
similar measures have been taken by other cities，such as cleveland and denver，but new york’s dhpd is the largest city developer of affordable housing in the country.(2010·四川，b)
小题1:what is the purpose of describing the boiler rooms in the first paragraph?

a．to explain the measures the city takes to care for poor people.

b．to suggest that affordable housing is possible in all areas.

c．to show how the environment­friendly building works.

d．to compare old and new boiler rooms.

小题2:what is an advantage of the buildings meeting the green communities standards?

a．lower running costs.

b．costing less in construction.

c．less air to be lost in hot days.

d．better prices for homeless people.

小题3:it can be learned from the text that________.

a．new york city is seriously polluted

b．people’s daily life causes many carbon emissions in new york city

c．a great number of people in new york city don’t have houses to live in

d．some other cities have developed more affordable housing than new york city

小题4:what is the main purpose of this text?

a．to call on people to pay more attention to housing problems.

b．to prove that some standards are needed for affordable housing.

c．to ask society to help homeless people and low­income families.

d．to introduce healthy，environmentally clever and affordable housing.