在生产环境中,()等可成为红外线辐射源。A:电焊B:加热金属C:熔融玻璃D:氧乙炔气焊E:强发光体

作者: rantiku 人气: - 评论: 0
问题 在生产环境中,()等可成为红外线辐射源。
选项 A:电焊 B:加热金属 C:熔融玻璃 D:氧乙炔气焊 E:强发光体
答案 BCE
解析

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