配套习题- 实际应用与反比例函数 -【青果学院】

挑战习题

1/5单选题

难度：

1.近视眼镜的度数y（度）与镜片焦距x（m）成反比例，已知200度近视眼镜镜片的焦距为0.5m，则y与x的函数关系式为（　　）

A
B
C
D

提示1：: 55Sx5LqO6L+R6KeG6ZWc5bqm5pWwee+8iOW6pu+8ieS4jumVnOeJh+eEpui3nXjvvIjnsbPvvInkuYvpl7TmiJDlj43mr5TkvovlhbPns7vlj6/orr55PTxpbWcgd2lkdGg9NyBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC9CMC83My9yQkFDRTFWaW5WR3psb3NHQUFBQldUZ1lxX1E1NDcucG5nIj7vvIznlLEyMDDluqbov5Hop4bplZznmoTplZzniYfnhKbot53mmK8wLjXnsbPlhYjmsYLlvpdr55qE5YC877yO

正确答案：QQ==

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2/5单选题

难度：

2.某闭合电路中，电源的电压为定值，电流I（A）与电阻R（Ω）成反比例．图表示的是该电路中电流I与电阻R之间函数关系的图象，则用电阻R表示电流I的函数解析式为（　　）青果学院

A
B
C
D

提示1：: 5Y+v6K6+ST08aW1nIHdpZHRoPTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTAvNTkvckJBQ0ZGVmluVld6TFlxZUFBQUJSbUctM09VNzg3LnBuZyI+77yM55Sx5LqO54K577yIM++8jDLvvInpgILlkIjov5nkuKrlh73mlbDop6PmnpDlvI/vvIzliJnlj6/msYLlvpdr55qE5YC877yO

正确答案：Qw==

6Kej77ya6K6+ST08aW1nIHdpZHRoPTkgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTAvNTkvckJBQ0ZGVmluVld6TFlxZUFBQUJSbUctM09VNzg3LnBuZyI+77yM6YKj5LmI54K577yIM++8jDLvvInpgILlkIjov5nkuKrlh73mlbDop6PmnpDlvI/vvIzliJlrPTPDlzI9Nu+8jDxicj7iiLRJPTxpbWcgd2lkdGg9OCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83QS9ENS9yQkFDSmxWaW5WV1Q3Y3dRQUFBQlFPNGxnVHcwNDIucG5nIj7vvI48YnI+5pWF6YCJ77yaQ++8jg==

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3/5单选题

难度：

3.某人对地面的压强与他和地面接触面积的函数关系如图所示．若某一沼泽地地面能承受的压强不超过300N/m²，那么此人必须站立在面积
（　　）的木板上才不至于下陷．（木板的重量忽略不计）青果学院

A	至少2m²
B	至多2m²
C	大于2m²
D	小于2m²

提示1：: 6aaW5YWI5qC55o2u5Zu+6LGh56Gu5a6a5Y+N5q+U5L6L5Ye95pWw55qE6Kej5p6Q5byP77yMIA==

提示2：: 54S25ZCO5Luj5YWlUD0zMDDmsYLlvpdT55qE5YC85Y2z5Y+v77yO

正确答案：QQ==

6Kej77ya6K6+5Ye95pWw55qE6Kej5p6Q5byP5Li6UD08aW1nIHdpZHRoPTcgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvMTAvNTkvckJBQ0ZGVmluVm54UVVwUEFBQUJPbl8xcHFFMDY4LnBuZyI+77yMPGJyPuKItee7j+i/h+eCue+8iDEw77yMNjDvvIk8YnI+4oi0Rj1QUz0xMMOXNjA9NjAw77yMPGJyPuKItFA9PGltZyB3aWR0aD0yMCBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC83QS9ENS9yQkFDSmxWaW5WbXpWYTgyQUFBQmNwbDlhdXM5OTYucG5nIj48YnI+5b2TUD0zMDDml7bvvIw8YnI+Uz0y77yMPGJyPuaVhemAiUHvvI4=

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4/5单选题

难度：

4.一辆汽车匀速通过某段公路，所需时间t（h）与行驶速度v（km/h）满足函数关系t=

（k是常数），其图象为如图所示的一段双曲线，端点为A（40，1）和B（m，0.5）．则k和m的值为（　　）青果学院

A	40，80
B	40，60
C	80，80
D	80，60

提示1：: 5bCG54K5Qe+8iDQw77yMMe+8ieS7o+WFpXQ9PGltZyB3aWR0aD03IGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzEwLzU5L3JCQUNGRlZpblZfaExCLUFBQUFCVmdDNUxiVTc5Ny5wbmciPu+8jOaxguW+l2vvvIwg

提示2：: 5YaN5oqK54K5QuS7o+WFpeaxguWHuueahOino+aekOW8j+S4re+8jOaxguW+l23nmoTlgLzvvI4=

正确答案：QQ==

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5/5单选题

难度：

5.某蔬菜生产基地在气温较低时，用装有恒温系统的大棚栽培一种在自然光照且温度为18℃的条件下生长最快的新品种．如图是某天恒温系统从开启到关闭及关闭后，大棚内温度y（℃）随时间x（小时）变化的函数图象，其中BC段是双曲线y＝

(k≠0)的一部分，则当x=16时，大棚内的温度约为（　　）青果学院

A	18℃
B	15.5℃
C	13.5℃
D	12℃

提示1：: 5Yip55So5b6F5a6a57O75pWw5rOV5rGC5Y+N5q+U5L6L5Ye95pWw6Kej5p6Q5byP5ZCO5bCGeD0xNuS7o+WFpeWHveaVsOino+aekOW8j+axguWHunnnmoTlgLzljbPlj6/vvI4=

正确答案：Qw==

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