Monday, January 1, 2024
Monday, May 1, 2023
问题:斯蒂芬-玻尔兹曼定律说明了黑体辐射力正比例于其绝对温度的四次方...
Thursday, September 15, 2022
问题:实际物体的黑度的大小与材料性质、表面温度、表面粗糙度等因素有关...
Thursday, January 18, 2024
Monday, September 12, 2022
问题:对流换热的基本定律是()A、傅立叶定律B、牛顿冷却公式C、斯蒂芬-玻尔兹曼定律D、余弦定律...
Friday, February 16, 2024
问题:固体、液体进行辐射()。A、在物体的表面进行,不涉及物体内部B、在整个体积内进行C、没有反射能力D、具有选择性...
Sunday, July 30, 2023
问题:()的辐射对波长有选择性。A、气体B、固体C、液体D、所有物体...
Thursday, October 19, 2023
问题:当换热面两侧的总给热系数相差悬殊时,()对整个换热过程起决定性作用。A、小的给热系数B、大的给热系数C、间壁的导热系数D、水当量...
Monday, October 30, 2023
Friday, February 16, 2024
Saturday, March 25, 2023
Friday, April 12, 2024
问题:绝对黑体完全服从兰贝特定律,其定向辐射强度在空间所有方向上是()。A、变量B、有差别的C、常量D、近似常量...
Monday, January 1, 2024
Friday, February 16, 2024
Monday, October 17, 2022
Friday, February 16, 2024
问题:只有相互能看得见的物体之间才可以进行辐射能的交换...
Monday, May 1, 2023
Thursday, September 15, 2022
问题:当导热系数为常数时,热量通过平壁传递时,壁内温度()。...
Thursday, September 15, 2022
问题:在自然对流给热中,给热速率主要取决于流体内的温度差大小...
Thursday, September 15, 2022