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【单选题】
继电保护实现的基本原理是根据其物理量在电气设备故障或异常时【 】A.
相比于电气设备正常时具有明显不同的特征来实现
B.
数值大小来实现
C.
相位偏差来实现
D.
出现而电气设备正常0来实现
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举一反三
【单选题】He has already been living in China for twenty years, so it's possible for him to see things from the ( ) of a Chinese.
A.
perspective
B.
prospective
C.
perceptive
D.
permissive
【单选题】—What’s your math teacher like? —_________.
A.
He’s twenty-seven years old
B.
He works in our school
C.
He’s creative and outgoing
D.
He likes physics and biology
【单选题】—What's your English teacher like? —______. [ ]
A.
He's twenty-seven years old
B.
He works in our school
C.
He's creative and outgoing
D.
He likes physics and biology
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