<img src="https://learnfile.20230611.cn/learnApp/31/3f/313f0a401

分类: 环化材料类 (电网) 发布时间: 2023-11-03 09:09 浏览量: 1

A.-48.12kJ

B.243.06kJ

C.-240.6kJ

D.-241.82kJ

正确答案是A