太平歌词是从北京老百姓当中流传起的莲花落的曲调演变过来的。
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The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?()
A. Cross
B. Parallel
Counter
D. Circular
以下选项中,具有对电信企业进行相应的监督与管理的部门有()。
A. 工商
B. 质量监督
C. 物价
D. 消费者协会
大便干结,口干欲饮者,为____;若小便短赤量少,热涩疼痛,多属____。