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削弱辐射换热的有效方法是加遮热板,而遮热板表面的黑度应()
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削弱辐射换热的有效方法是加遮热板,而遮热板表面的黑度应()
A、大一点好
B、小一点好
C、大、小都一样
D、无法判断
时间:2021-12-27 21:05
关键词:
传热学
物理学
大学试题
理学
答案解析
B
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削弱辐射换热的有效方法是加遮热板,遮热板的表面发射率(黑度)越大,削弱辐射换热的效果( )
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削弱辐射换热的有效方法是加遮热板,而遮热板表面的黑度应()
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