问题
单项选择题
水轮发电机的定子结构与三相异步电动机的定子结构基本相同，但其转子一般采用（）式。
A、凸极
B、罩极
C、隐极
D、爪极
答案
参考答案：A
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水轮发电机的定子结构与三相异步电动机的定子结构基本相同，但其转子一般采用（）式。
A、凸极
B、罩极
C、隐极
D、爪极
参考答案：A
| 阅读理解。 | ||||||
She always has a good time there. She gives corn to the chickens. She gives apples to her uncle's horse. She gives milk to the cat. She loves all the farm animals. They love her, too. 把单词填人相应的空格内。
2. I like apples. She likes apples, ______________. 3. He is my father's brother. He is my ______________. 根据短文内容，选择正确选项。 | ||||||
| 4. Who lives on the farm? | ||||||
[ ] | ||||||
| A. Her father's sister. B. Her grandfather. C. Her father's brother. | ||||||
| 5. What does she do there? | ||||||
[ ] | ||||||
| A. Give food to animals. B. Look for tree houses. C. Walk around the pond. | ||||||
| 6. Which animal is NOT there? | ||||||
[ ] | ||||||
| A. Cat. B. Chicken. C. Dog. | ||||||
选一选。
|
