问题
单项选择题
一台额定电压为10.5kV，额定电流为2000A的限流电抗器，起阻抗电压为XK=8，则该电抗器电抗标幺值应为下列哪项数值？（S=100MVA，U=10.5kV）（）
A.0.2199
B.0.002
C.0.3810
D.0.004
答案
参考答案：A
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一台额定电压为10.5kV，额定电流为2000A的限流电抗器，起阻抗电压为XK=8，则该电抗器电抗标幺值应为下列哪项数值？（S=100MVA，U=10.5kV）（）
A.0.2199
B.0.002
C.0.3810
D.0.004
参考答案：A
| 阅读理解。 | |
| My family and I have ridden bikes around the island several times. My friends often ask me questions about biking with their families. I'm sorry to learn that some of them don't really enjoy biking or get hurt on the road because they don't prepare well. Here I want to share some things that I think are important before you start off:
| |
| 1. What is the writer talking about? | |
| A. How to fix a bike on the road. B. How to save money on a bike ride. C. Things to do for a safe and happy bike ride. D. Things to remember when you get hurt on the road. | |
| 2. Which is said in the reading? | |
| A. Biking is good for health. B. More and more people go to work by bike. C. Biking around the island is getting popular. D. The size of the bike is important for biking. |