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题目设直角三角形两直角边的长分别为a和b,斜边长为c,斜边上的高为h,则a+b和c+h的大小关系是( )
The length of the two right-angled sides of the right-angled triangle are a and b, the length of the hypotenuse is c, and the height of the hypotenuse is h, then the size relationship between a+b and c+h is ()