A.由2节干电池串联的电池组,两端电压仍为1.5V
B.对人体安全电压只有36V
C.电压可以使电路中产生电流
D.不同的电源在电路两端电压相同
答案:C
To ______ good relationships with your teachers and classmates, you should learn to share ups and downs with them.
A.bring up
B.add up
C.keep up
D.take up
武昌起义后成立湖北军政府推举的都督是()
A.孙中山
B.黄兴
C.黎元洪
D.段祺瑞