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提问人：网友lixin080108
发布时间：2022-01-07
[主观题]
__________________________________ Before pendulum clocks were invented, Peter Henlein of Germany invented a spring-powered clock around 1510. It was not very precise. The first clock with a minute ha
A．Dividing the day into hours, minutes,and seconds
B．Using the sun
C．Dividing the year into months and days
D．Sundial clocks
E．Water clocks
F．Pendulum clocks
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