电压互感器的误差与二次负载的大小有关,当负载增加时,相应误差()。
A、将增大
B、将减小
C、可视为不变
D、有变化
参考答案:A
儿童呛咳的主要原因是()
A.支气管淋巴结肿大
B.肺结核
C.支气管肺癌
D.肺气肿
E.异物吸收
就下列句子提问。
1. He likes Chinese action movies.
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2. The T-shirt is white and black.
3. There are some students in the room.
4. There is a photo on the sofa.
5. He has apples, eggs, and milk for breakfast.
6. Sarah's birthday is November 11th.