The word horsepower(马力) was first used two hundred years ago.James Watt had made the first widely used steam(蒸气)engine. He had no way of telling people exactly how powerful it much work one strong 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 discovered 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.
6.The passagesays that Watt made the first widely used steam engine.
A.T
B.F
7.Watt made up a unit of measurement based on the strength of a horse.
A.T
B.F
8.Watt wanted to find a way to lift a 3300-pound weight.
A.T
B.F
9.One horsepower would equal the weight a horse could lift.
A.T
B.F
10.The title of the passageis "How the Term Horsepower Came into Being".
A.T
B.F
第1题:
The professor asked us to write a _____________ report.
A、two-hundreds-words
B、two-hundreds-word
C、two-hundred-words
D、two-hundred-word
第2题:
I ()supper when I()someone knocking at the door.
A、made . . . Heard
B、made . . .was heard
C、was making . . . was hearing
D、was making . . . heard
第3题:
下列哪一个单词不含[w]音?
A.surtout
B.voyage
C.voilà
D.watt
第4题:
A、英制马力
B、米制马力
C、水马力
D、美制马力
第5题:
A.mountdev/had1/winsys
B.mount/dev/had1/winsys
C.mount/dev/had1winsys
D.mountdev/had1winsys
第6题:
将Windows C:盘(hda1)安装在Linux文件系统的/winsys目录下,命令是()
A.mount dev/had1 /winsys
B.mount /dev/had1 /winsys
C.mount /dev/had1 winsys
D.mount dev/had1 winsys