题目内容

由单体自备聚合物的基本方法有加聚反应和缩聚反应。()

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To______, the government is offering to loan money to home-owners.

防火涂料一般由粘结剂、防火剂、防火隔热填充料及其它添加剂组成。()

You have to work harder to make up for the______(lose) time.

绝热性能好的材料，吸音性能也好。()