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48 What was the primary purpose of the earliest windmills?
(A) Grinding grain.
(B) Pumping water.
(C) Generating electricity.
(D) Producing steam power.
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統計： A(646), B(186), C(211), D(151), E(0) #3359373
統計： A(646), B(186), C(211), D(151), E(0) #3359373
詳解 (共 5 筆)
yu
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48 What was the primary purpose of the earliest windmills?
| The history of windmills, from ancient grain grinders to modern wind turbines, illustrates a long journey of innovation and adaptation. The earliest windmills used sturdy reed mats for blades on horizontal axes in the 600s.Starting in the 14th century, Dutch engineers utilized windpumps to reclaim land from low-lying valleys. However,the advent of the Industrial Revolution marked a decline in windmill use, as the need for more reliable energy sources grew to power the burgeoning factory system. The steam engine emerged as a pivotal invention during this era, offering the consistent power necessary for mass production. |
(A) Grinding grain.磨碎穀物。
(B) Pumping water.抽水。
(C) Generating electricity.發電。
(D) Producing steam power.生產蒸汽動力。
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48 What was the primary purpose of the earliest windmills?
(A) Grinding grain.
(B) Pumping water.
(C) Generating electricity.
(D) Producing steam power.
ㅤㅤ
48 最早的風車的主要用途是什麼？
(A) 磨穀物。
(B) 抽水。
(C) 發電。
(D) 產生蒸汽動力。
(A) 磨穀物。
(B) 抽水。
(C) 發電。
(D) 產生蒸汽動力。
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