门窗工程常见的质量病害有（）。
A.门窗框表面粗糙
B.铝合金外框腐蚀
C.门窗框变形、松动
D.墙体与门框交接处抹灰层空鼓、裂缝
E.窗外框与墙体之间渗水
参考答案：A, B, C, E
解析：
门窗工程常见的质量病害有：
①木门窗扇翘曲、窜角，门窗扇下垂，空心胶合门扇开胶；门窗框表面粗糙，门窗框变形、松动；门扇开关不灵等；
②铝合金门窗强度不够，铆接不牢固，长期使用后产生变形，密封部位开裂、漏水。铝合金外框腐蚀，窗外框与墙体之间渗水。推拉窗滑动不灵活，阻力大或窗扇易掉下等。
I sat down to read under an old tree in the park. I felt my life was 36 , because my whole world was dark. A young 37 ran up to me, out of breath（气喘吁吁）. He stood right before me with his head down and said 38 , “Look what I found!” In his hand was a flower, and what a poor sight! The flower was dry and 39 . I gave him a small smile and then turned my eyes away so that he could take his dry flower and go off to play. 40 , he sat next to my side and placed the flower to his 41 and said in surprise, “It smells sweet and it’s beautiful, too. That’s 42 I picked it. Here, it’s for you.” The flower before me was dead. But I knew I must 43 it, or he might never leave. So I accepted(接受) the flower, and replied, “This is just what I 44 .” Just then, for the first time I noticed that the boy could not 45 －he was blind. Tears came down my face as I 46 him for picking the best one. “You’re welcome.” he smiled, and then ran off to 47 . I sat there and wondered how he was able to learn about my pain. Through the eyes of a blind child, 48 I could see the problem was not with the world; the problem was me. And for all those years I myself had been 49 . I decided to see the beauty in life, and 50 every second of my life. And then I held that dry flower up to my nose and breathed in the smell of a beautiful rose.
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