题目若 lim_(x to x_0) f(x) 存在，且 C 为常数，则 lim_(x to x_0) Cf(x) = C lim_(x to x_0) f(x)A. 对B. 错若 $\lim_{x \to x_0} f(x)$ 存在，且 $C$ 为常数，则 $\lim_{x \to x_0} Cf(x) = C \lim_{x \to x_0} f(x)$A. 对B. 错题目解答答案A. 对