为什么团的县级和县级以下各级委员会书记,企业事业单位的团委书记,是党员的,可以列席同级党的委员会和常务委员会的会议?
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公路工程定额按用途分类分为()定额、()定额和()定额和()。
由三个频率相同、电势振幅相等、相位互差120度角的交流电路组成的电力系统,叫()。
焊接延迟裂纹是一种()
A. 冷裂纹
B. 热裂纹
C. 再热裂纹
D. 层向撕裂
The primary reason low pressure evaporators produce distillate more efficiently, and with
A. evaporation is accomplished in a vacuum
B. due to the higher temperature of the incoming feed
C. due to the latent heat of evaporation principle
D. evaporation in a submerged medium produces more distillate