问题
单项选择题
《电子式互感器现场校验规范》规定，对3P级的保护用电子式电压互感器，在规定采样频率及额定电压下的电压误差限值是（）
A.±1%
B.±3%
C.±6%
D.±12%
答案
参考答案：B
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《电子式互感器现场校验规范》规定，对3P级的保护用电子式电压互感器，在规定采样频率及额定电压下的电压误差限值是（）
A.±1%
B.±3%
C.±6%
D.±12%
参考答案：B
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| A shop owner(店主) closed his shop and went home. He. was very__l__, but just as he went to bed, the telephone__2__. A man asked, "What time do you open your shop?" The shop owner was __3__about this phone call. He put down the receiver(听筒) without answering and went .__4__to bed. A few minutes__5__ the telephone rang__6__ and the man asked the __7__ question. The shop owner became very __8__ and he shouted, "You needn't ask me when Iopen the shop, for I won't let you __9__ ." "Oh, no, I don't want to get in," the mansaid, "I want to go __10__ ."
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