问题
填空题
预应力混凝土与普通钢筋混凝土相比的主要优点是______，______，______，______，______。
答案
参考答案：抗裂性能高；刚度大；用料省；自重轻；耐火性强
搜题请搜索小程序“爱下问搜题”
预应力混凝土与普通钢筋混凝土相比的主要优点是______，______，______，______，______。
参考答案：抗裂性能高；刚度大；用料省；自重轻；耐火性强
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| Once a Frenchman 1 in England. He didn't know English very well. One day he went to the post office with a postcard. He bought a 2 . Then he gave the stamp and the postcard to the girl 3 the desk. "Oh, no," the girl said, "you must stick (贴) the stamp on yourself." He was very 4 . He couldn't believe his ears. "Why must I stick the stamp on 5 ?" he asked. "Oh," said the girl, "I mean that you must stick the stamp on the postcard. And you must do it yourself." | ||||
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