40[填空题] 常用工业导火索的燃速为（）;普通导爆索的爆速不低于（）。 - 查题网

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河南成教 / 河南理工大学

40[填空题]
常用工业导火索的燃速为（）;普通导爆索的爆速不低于（）。

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河南理工大学

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