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算术表达式a+(b-c)*d的后缀式是 ( ) (+、-、*表示算术的加、减、乘运算,运算符的优先级和结合性遵循惯例)。
A.b c – d * a +
B.a b c – d * +
C.a b + c – d *
D.a b c d – * +
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