问题
单项选择题
在纯电容单相交流电路中，电压（）电流。
A.超前
B.滞后
C.既不超前也不滞后
D.相反180°
答案
参考答案：B
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在纯电容单相交流电路中，电压（）电流。
A.超前
B.滞后
C.既不超前也不滞后
D.相反180°
参考答案：B
| 给下列问句选择正确的答语。 |
| ( ) 1. What would you like for lunch? ( ) 2. What do you have for lunch? ( ) 3. What's your favourite food? ( ) 4. What's your favourite fruit? ( ) 5. Do you have noodles? | A. I like apples very much. B. I like hamburgers and chicken. C. Yes, we do. D. I'd like some eggplants and green beans. E. I have some fish and tofu. |