The first______in 1814 marked the beginning of a new stage of the Industrial Revolution wh

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The first______in 1814 marked the beginning of a new stage of the Industrial Revolution when the newly-built railways began to replace canals as the most important means of transport.

A.steam engine

B.spinning-Jenny

C.spinning Mule

D.steam locomotive

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热搜:关于氨基酸代谢错误的论述是_________。