题目硫化氢浓度达到()时,遇火能爆炸。A. 5-16 %B. 13-75%C. 4.3-45.7%D. 30%以上硫化氢浓度达到()时,遇火能爆炸。A. 5-16 %B. 13-75%C. 4.3-45.7%D. 30%以上题目解答答案C. 4.3-45.7%