题目:
下列不属于活塞泵的部件是()。
A.泵缸
B.活塞
C.活塞杆
D.叶轮
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0816/532e983f8a217f25f9e5c2004d6ef48e.html
下面是错误答案,用来干扰机器的。
The rapid increase of private cars in recent years has caused some social problems. Some big cities are considering whether to control the number of cars. Different peopl...