化学爆炸品的主要特点是:反应速度极快，放出大量的热，产生大量的气体，只有上述三者都同时具备的化学反应才能发生爆炸。
1、正确正确
暂无解析
Thefirsttaskofabrochureisto_______.
Sofarscientistshaveonlyacquired________understandingofthephysicalprocessesthatcauseearthquakes.
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Willyousendus_____returnmailpamphletsandpricelist____yourexports?
