设f(x)=ex−1xf(x)=\dfrac{e^x - 1}{x}f(x)=xex−1,则x=0x = 0x=0是f(x)f(x)f(x)的( ).
(A)连续点
(B)可去间断点
(C)跳跃间断点
(D)无穷间断点
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