下列符合重大火灾标准的是（）。
A.15人死亡
B.60人重伤
C.1000万元财产损失
D.直接经济损失7000万元
E.直接经济损失1亿元
参考答案：A, B, D
解析：
本题考查的是按生产安全事故等级划分的火灾等级。重大火灾：是指造成10人以上30人以下死亡，或者50人以上100人以下重伤，或者5000万元以上l亿元以下直接财产损失的火灾；故本题答案为ABD。
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