问题
单项选择题
感应式单相电能表驱动元件由电流元件和（）组成。
A、转动元件
B、制动元件
C、电压元件
D、齿轮
答案
参考答案：C
搜题请搜索小程序“爱下问搜题”
感应式单相电能表驱动元件由电流元件和（）组成。
A、转动元件
B、制动元件
C、电压元件
D、齿轮
参考答案：C
| 选择合适的句子完成对话（有一项多余）。 | |
B: I used to buy some story books . Now , I try to save some money to donate to charities . A: 2_______ B: ORBIS. 3_______ I think it is very sad if you can't see anything . What about you ? A: I often donate money to UNICEF . 4_______ B: Sometimes I also donate money to it with my classmates. 5_______ A: Yes, let's save our money to help the people in need . |