【判断题】根据“核心与周边市场”理论,由于核心市场的市场渗透程度较低,竞争相对较缓,于是新业态较易从核心市场产生。
【单选题】The problem was so tough that the pupils did not know how to ______ it.
【单选题】The Government is likely to ______ with the opposition on the new tax proposals.
【简答题】由 (填" 切应力互等"或"胡克" ) 定理可知,圆轴扭转时在过轴线的纵截面上有平行于轴线的切应力。