什么是轨面前后高低

题型:名词解释

问题:

什么是轨面前后高低

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题型:名词解释

阅读理解。

     Every time you turn on the television or take a ride in a car,you could be adding to a problem called acid

rain (酸雨). In this article, you'll learn how acid is created, and how it affects us, and more importantly, what

we all can do to prevent it. 

How is acid rain created?

     When people use fuels (燃料), such as coal and gasoline, poisonous gases are give off. When these gases

mix with rain, acid rain forms. Many power stations burn fuels in order to creat the electricity (电) that we

use in our homes and offices every day. Cars and trucks also send these gases into the air when they burn

gasoline.When rain mixes with these gases, harmful things called acids form. This is acid rain.

How does acid rain affect us?

     Acid rain damages (毁坏) everything that it touches. It poisons our rivers, ponds, lakes, and oceans along

with all the life in them. It pollutes our soil and crops, harms trees, and can even kill fish and plants. Acid rain

also eats away at buildings.

How can we prevent acid rain?

     We need to cut down on the pollution that gets into our air. Turn off lights, television, and other electrical

appliances if you are not using them, Walk or take a bike whenever possible. If you are travelling a long

distance, take a bus or train to save fuel.

     As research shows, acid rain harms our environment. But people everywhere can take small steps now to

help protect our environment for future generations.

1. When power stations burn fuel, ______.

A. acid rain form

B. air pollution is caused

C. noise pollution is caused

D. acid rain gets heavier

2. According to the article, acid rain affects us ______.

A. suddenly

B. slightly

C. seriously

D. immediately

3. What advice does the article give us?

A. Go to school on foot or by bike if we can.

B. Go to bed earlier in order to use less electricity.

C. Travel by bus to prevent acid rain.

D. Turn off the television on rainy days.

4. What is the best title of the article?

A. Preventing Acid Rain

B. Forming of Acid Rain

C. Acid rain, Heavy Rain

D. Acid Rain, Killer Rain

题型:名词解释

耕地占用税的征税对象,是占用耕地从事其他非农业建设的行为。耕地是指用于种植农作物的土地,占用前3年内用于种植农作物的土地,也视为耕地。()

题型:名词解释

国家开发银行的贷款可分为( )。

A.特别贷款

B.优惠贷款

C.软贷款

D.硬贷款

题型:名词解释

回架时,在所有人员撤至安全地点后,由指定人员操作抽回(),一边落架一边利用回架千斤顶使支架前移。

A.支架操纵阀

B.千斤顶操纵阀

C.支架操纵阀和千斤顶操纵阀

D.液压操纵阀

题型:名词解释

紧急阀95中紧急鞲鞴杆上的缩孔Ⅰ的直径为()

A、1.7mm

B、8mm

C、0.5mm

D、0.1mm

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