问题
单项选择题
对空冷器按布置特点分类有()。
A、鼓风式、引风式
B、水平式、斜定式
C、干式、湿式、干湿联合式
D、都不是
答案
参考答案:B
对空冷器按布置特点分类有()。
A、鼓风式、引风式
B、水平式、斜定式
C、干式、湿式、干湿联合式
D、都不是
参考答案:B
Coffee has become a popular drink in our culture. Most people have a coffee maker at home for guests who come to visit. It naturally contains caffeine (咖啡因), which people in today’s society have somewhat come to rely on (依靠) to provide them with energy. In the workplace many people start their day with a cup of coffee, and then continue to drink it until it’s time to go home. Many meetings also begin with a cup of coffee --- which is why so many workplaces now have a steady flow of office coffee. Coffee is unsurprisingly one of the most traded agricultural products in the world, supporting the economy in many countries. Coffee is made from the roasted(烤,烘,焙) seeds of coffee cherries, which grow on trees in over 70 countries. The seeds are roasted to different degrees depending on the flavors wanted, and then are brewed (泡,煮) to create the coffee drink. Coffee is usually sold already roasted, so that all you have to do is add hot water. Coffee is labeled according to its appearance --- light, medium light, medium, medium dark, dark, or very dark. People argue a lot about whether the effect of drinking coffee is positive or negative. Some people think that drinking too much coffee is bad for our health. But you can buy decaffeinated (脱去咖啡因的) coffee, which has a lot less caffeine. Most people, however, would not care about the negative effects of drinking coffee.
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