问题
问答题 简答题
某换热器换热面积为200m2，传热系数为150kcal/m2•h•℃，冷流入口温度为24℃，出口温度为36℃，热流入口温度为75℃，出口温度为52℃，求此换热器的换热量。
答案
参考答案：
搜题请搜索小程序“爱下问搜题”
某换热器换热面积为200m2，传热系数为150kcal/m2•h•℃，冷流入口温度为24℃，出口温度为36℃，热流入口温度为75℃，出口温度为52℃，求此换热器的换热量。
参考答案：
| Cloze. | ||||
| Adults are often surprised by how well they remember something they learned as children but have never practised in the meantime. A man who has not had an opportunity to go swimming for years can 1 swim as well as ever when he gets back in the water. He can get on a bicycle after several decades and still 2 away. A mother who has not 3 the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or recite the story of Cinderella or Snow White. One explanation is the law of overlearning, which can be stated as follows: 4 we have learned something, additional learning increases the 5 of time we will remember it. In childhood, we usually continue to practise such skills as swimming, bicycle riding long after we have learned them. We continue to listen to and 6 ourselves of poems such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella or Snow White. We not only learn but 7 . The law of overlearning explains why cramming (突击学习) for an examination, 8 it may result in a passing grade, is not a 9 way to learn a school course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little overlearning; 10 , is usually a good investment toward the future. | ||||
|
