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【判断题】
零序电流保护能反映出电力系统接地短路。A.
正确
B.
错误
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【简答题】They already guide blind and disabled people; now dogs are to be trained to help people with dementia（痴呆） or Alzheimer's．Alzheimer's can make people confuse night and day or forget basic things such a...
【简答题】Many blind people use guide dogs to help them get safely from place to place and to warn them of er. But what can blind people do if they are allergic（过敏的）to dogs or just don’t like them? For some...
【简答题】Dogs already guide blind and disabled people and now they are to be trained to help people with dementia．The idea developed by some university students will now be put into practice by Scotland Medica...
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