下面有关硬质或半硬质绝热层施工的说法正确的是( )。
A．包扎二合管时应左右合拢；二合管应互相交错1/2
B．弯头的三合管结构最好为定型的，也可以用二合管加工配砌
C．用膨胀珍珠岩及泡沫水泥管壳时可用C52.5硅酸盐水泥为胶粘剂，二合管缝隙以挤出胶粘剂为饱满
D．铝箔玻璃棉管壳保温材料，施工方便，只需要在接合缝处贴合铝箔胶粘带即可，外包六角铁丝网
E．用硬质聚苯乙烯管壳或聚氨酯泡沫塑料管壳时黏结剂宜用202胶，配胶按质量比5:1，混合后搅均匀使用
参考答案：A,B,C,E
DIY is very poplar in China now. Do you know what it is? Yang Chen works ________ a computer business in Beijing. Though he enjoys his work, it is hard for him ______after work. “ for a long time, I had no choice except going to a bar for a drink and karaoke to relax myself,” he said. One day ________ he saw many toys in a toy shop, he had an idea. “ why _______ some kind of things and relax myself?” Then he began to ________ model planes, model ships and something else. The things he has made by himself don’t look as professionally(专业的) made as those in the shop, ________ he likes doing it. “ Maybe it is not as much fun ______ as things which are bought expensively from the shops,” he said. Now his bookshelves are full of many kinds of things he has made. They are very beautiful and his friends _______ them very much. More and more people are like Yang, making or creating(创造) things of their own. They like to do it __________. Though making things with our own hands may _______ much time, some people enjoy doing it, now known as DIY-do-it-yourself, very much. They can make all kinds of things they like. DIY is becoming more and more popular in China.
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