问题
单项选择题
如果直流电源为220V,而中间继电器的额定电压为110V,则回路的连接可以采用中间继电器串联电阻的方式,串联电阻的一端应接于()。
A.正电源
B.负电源
C.远离正、负电源
D.回路内任意位置
答案
参考答案:B
如果直流电源为220V,而中间继电器的额定电压为110V,则回路的连接可以采用中间继电器串联电阻的方式,串联电阻的一端应接于()。
A.正电源
B.负电源
C.远离正、负电源
D.回路内任意位置
参考答案:B
This is a big tree. I can 36 a girl under it. She 37 a student. 38 name is Kate Green. She is 39 American girl. Kate is 40 yellow trousers. 41 are very nice. 42 boy near Kate is her brother, Jim. Jim is 43 a green, orange and blue bike. His coat is blue and his shoes 44 white. Kate and Jim are good students. They are 45 the same(相同的) school.
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