问题
多项选择题
以下哪几项为阀控中的电流控制环的作用()。
A.实现足够快速的阶跃响应
B.使逆变器具有正阻特性
C.迅速降低故障过电流
D.消除稳态误差
答案
参考答案:A, C, D
以下哪几项为阀控中的电流控制环的作用()。
A.实现足够快速的阶跃响应
B.使逆变器具有正阻特性
C.迅速降低故障过电流
D.消除稳态误差
参考答案:A, C, D
阅读下列短文,根据短文中的信息完成文后表格。(每空一词) When people travel abroad(国外), they sometimes stay in the homes of the local people. This is a homestay. I am living with an old English couple, in the west of London. They have a clean four-bedroom house. This is a new house. It has two bathrooms and a garden with many beautiful flowers. I have a bedroom of my own. There are some shopping centres and a restaurant next to the house, and the house is close to an underground station. It takes about 30 minutes to take an underground to the centre of London. I think a homestay may be a good choice for you if it is your first time to visit abroad. The local people are friendly and ready to help. If you want to celebrate the holidays with them, you will get to know more about their culture and customs.
|