更多"The word “horsepower” was first use"的相关试题:
[填空题] The word “horsepower” was first used two hundred years ago. James Watt had made the world’’s first widely used ( 11 ) _________. He had no way of telling people exactly how powerful it was, for ( 12 ) _________ there were no units for measuring power.
Watt decided to find out how much work one strong horse could do in (13) _________ He called that unit one horsepower. With this unit he could measure the work his steam engine could do.
He discovered that a horse lift a (14) _________ weight 10 feet in one minute. Because his engine did (15) _________ as much as the horse, Watt called it a ten-horsepower engine.
[填空题]The word horsepower was first used two hundred years ago. James Watt had made the world’s first (11) used steam engine. He had no way of telling people (12) how powerful it was, for at that time there were no units for measuring power. Watt decided to (13) how much work one (14) horse could do in one minute. He called that unit one horsepower. With this unit he could measure the work his steam engine could do. He (15) that a horse could lift a 3,300-pound weight 10 feet into the air in one minute. His engine could lift a 3,300-pound weight 100 feet in one minute. Because his engine did ten times as much work as the horse, Watt called it a ten horsepower engine.
