配套习题- 一元一次方程的应用——流水行船问题 -【青果学院】

挑战习题

1/5单选题

难度：

1.轮船在静水中速度为每小时20km，水流速度为每小时4km，从甲码头顺流航行到乙码头，再返回甲码头，共用5小时（不计停留时间），求甲、乙两码头的距离. 设两码头间的距离为xkm，则列出方程正确的是（　　）

A	（20+4）x+（20-4）x=5
B	20x+4x=5
C	+＝5
D	+＝5

提示1：: IOetiemHj+WFs+ezu++8mumhuuawtOS7jueUsuWIsOS5meeahOaXtumXtCvpgIbmsLTku47kuZnliLDnlLLnmoTml7bpl7Q9NeWwj+aXtg==

正确答案：RA==

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2/5单选题

难度：

2.一架飞机在两个城市之间飞行，无风时飞机每小时飞行552千米，在一次往返飞行中，飞机顺风飞行用了5

小时，逆风飞行用了6小时，这次的风速为x小时. 依题意列方程；（552+x）•5

=（552-x）•6，这个方程表示的意义是（　　）

A	飞机往返一次的总时间不变
B	顺风与逆风的风速相等
C	顺风与逆风时，飞机自身的航速不变
D	顺风与逆风时，所飞的航线长不变

提示1：: IOimgeaxgui/meS4quaWueeoi+ihqOekuueahOaEj+S5ie+8jOWNs+axguS9v+ivpeaWueeoi+aIkOeri+aXtueahOetiemHj+WFs+ezu++8jOaIkeS7rOWPr+S7pemAmui/h+WIhuaekOaWueeoi+W3puWPs+S4pOi+ueeahOW8j+WtkOW+l+WIsC4=

正确答案：RA==

6Kej77ya6YCa6L+H6KeC5a+f5pa556iL5oiR5Lus5Y+v5Lul55yL5Ye677ya5pa556iL55qE5bem6L655piv6aG66aOO5pe255qE6YCf5bqm5LmY5Lul6aG66aOO5pe255qE5pe26Ze05Y2z562J5LqO6aG66aOO5pe255qE6Lev56iL77ybPGJyPuaWueeoi+eahOWPs+i+ueaYr+mAhumjjuaXtueahOmAn+W6puS5mOS7pemAhumjjuaXtueahOaXtumXtOetieS6jumAhumjjuaXtueahOi3r+eoi++8mzxicj7miYDku6Xov5nkuKrmlrnnqIvooajnpLrnmoTmhI/kuYnmmK/pobrpo47kuI7pgIbpo47ml7bvvIzmiYDpo57nmoToiKrnur/plb/kuI3lj5guIDxicj7mlYXpgIlE44CC

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3/5单选题

难度：

3.在一直线形航道上，某人乘船由A地顺流而下到B地，然后又逆流而上到C地，共乘船4h. 已知船在静水中的速度为7.5km/h，水流速度为2.5km/h，若A、C两地的距离为10km，则A、B两地间的距离为（　　）

A	20km
B	km
C	20km或km
D	以上都不正确

提示1：: IOatpOmimOeahOWFs+mUruaYr+WFrOW8j++8mumhuua1gemAn+W6pj3pnZnmsLTpgJ/luqYr5rC05rWB6YCf5bqm6YCG5rWB6YCf5bqmPemdmeawtOmAn+W6pi3msLTmtYHpgJ/luqbvvIzorr7mnKrnn6XmlbDvvIzliJfmlrnnqIvmsYLop6PljbPlj68=

正确答案：Qw==

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4/5单选题

难度：

4.一轮船从甲港顺流驶到乙港，比从乙港返回甲港少用了2.5小时，若船速为26千米/时，水速为2千米/时，求甲港和乙港相距多少千米？设甲港和乙港相距x千米，根据题意，可列出的方程是（　　）

A	＝−2.5
B	＝+2.5
C	＝+2.5
D	＝-2.5

提示1：: IOi9ruiIueayv+axn+S7jueUsua4r+mhuua1gemptuWIsOS5mea4r++8jOWImeeUseS5mea4r+i/lOWbnueUsua4r+WwseaYr+mAhuawtOihjOmptu+8jOeUseS6juiIuemAn+S4ujI25Y2D57GzL+aXtu+8jOawtOmAn+S4ujLljYPnsbMv5pe277yM5YiZ5YW26aG65rWB6KGM6am255qE6YCf5bqm5Li6MjYrMj0yOOWNg+exsy/ml7bvvIzpgIbmtYHooYzpqbbnmoTpgJ/luqbkuLrvvJoyNi0yPTI05Y2D57GzL+aXtg==

提示2：: IOagueaNruKAnOi9ruiIueS7jueUsua4r+mhuua1gemptuWIsOS5mea4r++8jOavlOS7juS5mea4r+i/lOWbnueUsua4r+WwkeeUqOS6hjIuNeWwj+aXtuKAne+8jOW+l+WHuuetiemHj+WFs+ezu++8mui9ruiIueS7jueUsua4r+mhuua1geihjOmptuWIsOS5mea4r+aJgOeUqOeahOaXtumXtD3lroPku47kuZnmuK/ov5Tlm57nlLLmuK/nmoTml7bpl7QtMi415bCP5pe277yM5o2u5q2k5YiX5Ye65pa556iL5Y2z5Y+vLg==

正确答案：QQ==

6Kej77ya6K6+55Sy5riv5ZKM5LmZ5riv55u46LedeOWNg+exs++8jOWPr+W+l+aWueeoi++8mjxicj48aW1nIHdpZHRoPTEyIGhlaWdodD00MiBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzc0Lzc0L3JCQUNGRlBrT2JteC0xTUxBQUFCYmtNS1pjazYyOS5wbmciPu+8nTxpbWcgd2lkdGg9MTMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQjIvMTIvckJBQ0UxUGtPYm5qT2dRYkFBQUJlRFBkZFhBNTA4LnBuZyI+JiM4NzIyOzIuNTxicj7mlYXpgIlBLiA=

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5/5单选题

难度：

5.已知一艘轮船顺水航行46千米和逆水航行34千米共用的时间，正好等于船在静水中航行80千米所用的时间，并且水流的速度是2千米/小时，求设轮船在静水中的速度为x千米/小时，是下列方程正确的是( )

A
B
C
D

提示1：: IOetiemHj+WFs+ezu+S4uu+8mumhuuawtDQ25Y2D57Gz5pe26Ze0K+mAhuawtDM05Y2D57Gz55qE5pe26Ze0PemdmeawtDgw5Y2D57Gz55qE5pe26Ze0Lg==

正确答案：Qg==

6Kej562U77ya6K6+6Ii55Zyo6Z2Z5rC05Lit6Iiq6KGM55qE6YCf5bqm5Li6eOWNg+exsy/ml7Y8YnI+5YiZPGltZyB3aWR0aD04NSBoZWlnaHQ9NDIgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC83NC83NS9yQkFDRkZQa09jMmhiUFlFQUFBQ2RpT1h0YlkxNTAucG5nIj48YnI+5pWF6YCJQi4g

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