题目内容

[音频]

A. They improved the pipes that were attached to the bottom.
B. They added a knob on the chain to pull more easily.
C. They improved the flush system to make it less water-consuming.
D. They improved the collection bowl to make it more sanitary.

查看答案

搜索结果不匹配？点我反馈

更多问题

[音频]

A. The person who invented the toilet.
B. The significance of the toilet in our life.
C. The invention of the toilet.
D. The development of the toilet.

查看答案

下列关于对流传热系数的说法,正确的有( )。

A. 同一种流体,有相变的高于无相变的
B. 气体高于液体
C. 同一流体,强制对流高于自然对流
D. 蓄热能力越大,传热速率越大,对流传热系数越大

查看答案

对流换热是指( )

A. 在流体内部热量从高温处向低温处的传递
B. 流体运动时内部热量从高温处向低温处的传递
C. 运动着的流体与固体壁面之间的传热
D. 流体内部由于质点运动和混合造成热量从高温处向低温处的传递

查看答案

湍流流体中的对流传热,热阻最大的区域在( )

A. 层流底层
B. 缓冲层
C. 湍流主体
D. 均匀分布于3个区域内

查看答案

[音频]

A. They improved the pipes that were attached to the bottom. B. They added a knob on the chain to pull more easily. C. They improved the flush system to make it less water-consuming. D. They improved the collection bowl to make it more sanitary.

[音频]

下列关于对流传热系数的说法,正确的有( )。

对流换热是指( )

湍流流体中的对流传热,热阻最大的区域在( )

A. They improved the pipes that were attached to the bottom.
B. They added a knob on the chain to pull more easily.
C. They improved the flush system to make it less water-consuming.
D. They improved the collection bowl to make it more sanitary.