The spinning jenny was invented in 1766 by______. ( )

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问题 The spinning jenny was invented in 1766 by______. (  )

选项 A、James Watt
B、James Hargreaves
C、John Ray
D、Samuel Crompton

答案B

解析 英国工业革命时,詹姆士.哈格里夫斯的詹妮纺纱机(1766年)改革了纺纱,使得一个工人同时纺许多线。
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