※ 引述《scont ( )》之铭言： : 1.What is the number of 360-degree rotations that a bicycle wheel made while : rolling 100 meters in a straight line without slipping? : (1)The diameter of the bicycle wheel,including the tire,was 0.5 meter. : (2)The wheel made twenty 360-degree rotations per minute. : ANS:(A) : 想问第一个选项 是要先把他变成半径吗? 然後是用面积算还是? 题目问的只是轮胎在100公尺内转几次360度(=转一圈) 所以只要能求出轮胎的圆周就是充足 (1)已经直接给你了 (2)这资料没办法帮上忙 : 2.If a certain animated cartoon consists of a total of 17280 frames on film, : how many minutes will it take to run the cartoon? : (1)The cartoon runs without interruption at the rate of 24 frames per second. : (2)It takes 6 times as long to run the cartoon as it takes to rewind the film, : and it takes a total of 14 minutes to do both. : ANS:(D) : 想问第二个选项是甚麽意思 看不太懂 : 感谢~ 11thOG第81题 拨放卡通的时间是卷片的时间的6倍，拨片+卷片总共要14分钟 故拨片的时间=12分钟，条件充足 --

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