内燃机活塞的作用是什么?
参考答案:
活塞的作用是承受气缸中的气体作用力,并将此力通过活塞销传给连杆,以推动曲轴旋转。
Li Ming is clever, honest, and hard-working. _________, he is a good student and we should learn from him.
A.In a nutshell
B.After all
C.On the other hand
D.By the way
什么是餐饮企业造型设计?