【简答题】与爬行动物比较,哺乳动物的进步性特征主要表现在哪些方面?
【判断题】Air velocity doesn’t impact the size of particle.
【判断题】两故障相的短路电流总是大小相等、方向相反,数值上为正序电流的3倍。
【判断题】Air velocity impacts the size of particle.
【判断题】The particle size range of colloidal is 5-500 mm.( )
【简答题】现代人力资源管理与传统人事管理有哪些区别?
【单选题】If the cumulative curve of soil particle size distribution is very steep, it means ().
A.
Soil particles are uniform.
B.
The non-uniformity coefficient is large.
D.
Filling is easy to tamp.