一台绕线式感应电动机，定子绕组通入三相交流电流，旋转磁场逆时

搜题请搜索小程序“爱下问搜题”

问题单项选择题

一台绕线式感应电动机，定子绕组通入三相交流电流，旋转磁场逆时针方向旋转，转子绕组开路，此时电动机将会（）。

A．逆时针方向旋转

B．顺时针方向旋转

C．不动

D．摆动

答案

参考答案：C

填空题

Complete sentences with "is, are, was, were".

1. We told to be ready at ten o'clock.

2. The police are looking for a man who thought to be dangerous.

3. The 1948 Olympic Games held in London.

4. Rice grown all over Asia.

5. Most people paid at the end of the month.

6. Thousands of gadgets invented every year.

7. The Live Aid concerts in England and America watched by millions of fans.

8. Camera often used when people travel.

9. Milk had as main food for babies.

单项选择题

化脓性骨髓炎是涉及什么组织的化脓性感染（）

A.骨髓

B.骨皮质和骨髓

C.骨膜和骨髓

D.骨膜、骨皮质和骨髓

E.骨皮质和骨膜