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【单选题】
设f(x)＝2x2＋3x－2，则当x→0时A.
f(x)与x是等价无穷小．
B.
f(x)与x是同阶但非等价无穷小．
C.
f(x)是比x更高阶的无穷小．
D.
f(x)是比x较低阶的无穷小．
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