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(2013•巴中)在物理实验课上,小明用弹簧称将铁块A悬于盛有水的水槽中,然后匀...
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(2013•巴中)在物理实验课上,小明用弹簧称将铁块A悬于盛有水的水槽中,然后匀速向上提起(不考虑水的阻力),直至铁块完全露出水面一定高度,则下图能反映弹簧称的读数y(单位N)与铁块被提起的高度x(单位cm)之间的函数关系的大致图象是( )
A.
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B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848546986/SYS201310191104598485469005_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848546986/SYS201310191104598485469005_ST/images3.png)
D.
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