问题
问答题 简答题
何浓度煤尘爆炸威力最强?
答案
参考答案:
爆炸威力最强的煤尘浓度为300~400g/m3。
何浓度煤尘爆炸威力最强?
参考答案:
爆炸威力最强的煤尘浓度为300~400g/m3。
时下,很多学生带手机上学。为此,某英语报在你校组织了一场讨论。讨论的主题:中学生是否有必要带手机去学校。请你根据下表提供的信息,给报社写一封信,客观地介绍讨论情况。
1.信的开头已为你写好。 2.词数:100左右。 3.参考词汇:攀比:vie with… 在校园内:on the campus Dear editor: I’m writing to tell you about the discussion we’ve had about whether it is necessary for middle school students to carry mobile phones to school. __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ |