问题
问答题 简答题
固体废物按其来源的不同分为几类？并各举两例。
答案
参考答案：
固体废物按其来源分为五类：
（1）矿业固体废物：例如废石，尾矿，煤矸石
（2）工业固体废物：例如：高炉渣、钢渣、硫酸渣、粉煤灰
（3）城市垃圾：例如：废纸废塑料、废金属
（4）农业固体废物：例如：秸杆、畜禽粪便、农药污泥
（5）放射性固体废物：劳保用品、金属、建筑材料
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固体废物按其来源的不同分为几类？并各举两例。
参考答案：
固体废物按其来源分为五类：
（1）矿业固体废物：例如废石，尾矿，煤矸石
（2）工业固体废物：例如：高炉渣、钢渣、硫酸渣、粉煤灰
（3）城市垃圾：例如：废纸废塑料、废金属
（4）农业固体废物：例如：秸杆、畜禽粪便、农药污泥
（5）放射性固体废物：劳保用品、金属、建筑材料
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| Many people who work in London want to live outside it and to go to their offices, factories or schools every day by train, car or bus, even though this 1 they have to get up earlier in the morning and reach 2 later in the evening. One benefit (好处) of living outside London is that houses are 3 . Even a small flat (公寓) in London without a garden costs quite a lot 4 . With the same money, one can get a little house in the country with a garden of 5 own. Then, in the country one can be 6 from the noise and hurry of the town. 7 one has to get up earlier and spend more time in trains or buses, one can sleep 8 at night, and, during weekends and 9 summer evenings, one can enjoy the 10 air of the country. If one 11 gardens, one can spend one's 12 time digging, planting, watering and doing the hundred and one other jobs which are 13 in the garden. Then, when the flowers and vegetables 14 , one has the reward (回报) of a person who has shared the secrets of 15 . Some people, however, take no interest in country things; for them, 16 lies in the town, with its cinemas and theatres, beautiful shops and busy streets, dance halls and restaurants. Such people would 17 that their life was not worth 18 if they had to live it outside London. A walk in one of the parks and a visit 19 the sea every summer is all the country they 20 . | ||||
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