循环流化床锅炉进行烘炉时为什么要严格按照烘炉曲线进行？
参考答案：
新安装的锅炉，尤其是循环流化床锅炉，在密相区、水冷壁屏或过热器、燃烧室出口、返料装置、旋风分离器等表现敷设有大量的、非常厚的耐火材料保护层和保温层，含有大量水分。烘炉的主要目的是使炉墙达到一定的干燥程度，耐火材料保护层形成结晶体而固化。防止锅炉运行时由于耐磨材料潮湿，急剧受热后膨胀不均匀而开裂或由于高温度、高浓度的循环物料的冲刷造成耐火材料保护层失效、脱落，阻塞排渣口和物料循环回路，使受热面被磨损造成爆管。
| 完形填空。 | |||
| Richard found work in a big office after he had finished college. He liked to use his (1)____and was good (2)_____ his work. So he was often paid more than his workmates and he worked (3)______. But something was wrong with the young man one month. He couldn't fall (4)____ at night. So he was always (5)_____ in the daytime and often made mistakes. He had to go to a hospital.The (6)______ looked him over and (7)_____ him to buy some highly effective sleeping pills(高效安眠药). He took them (8)_____ the went to bed. Soon after that he went to (9)_____. Richard (10)_____ in the morning, he had a look at the (11)_____ on the wall. It was a quarter to seven. He got up and went to work after (12)____ . As soon as he went in the office, he said to the head of the office, "Good morning, Mr. Clarke! I've(13)_____ had a good sleep like last night's. And I'm feeling (14)_____better now!" "Skunk(混蛋)!" the head (15)_____ loudly.”We've looked for you for two days! I wanted you to do something important, but it's too late now!" | |||
| ( )1. A. hand ( )2 A. for ( )3. A. hard ( )4. A. asleep ( )5. A. well ( )6. A. doctor ( )7. A. tell ( )8. A. after ( )9. A. asleep ( )0. A. stood up ( )11. A. o’clock ( )12. A. meal ( )13. A. always ( )14. A. much ( )15. A. laughed | B. head B. in B. fast B. alone B. hungry B. policeman B. say B. since B. sleeping B. woke up B. map B. dinner B. usually B. more B. shouted | C. ear C. with C. harder C. afraid C. thirsty C. driver C. ask C. before C. sleep C. at down C. picture C. party C. never C. most C. smiled | D. nose D. at D. faster D. behind D. tired D. nurse D. told D. because D. slept D. lay down D. clock D. breakfast D. often D. than D. asked |