(2007数学一)当 arrow (0)^+ 时,与 sqrt (x) 等价的无穷小量是 () .-|||-A. https:/img.zuoyebang.cc/zyb_d23ae8cab0bb975c99e95a628d13514e.jpg-(e)^sqrt (x) B. ln dfrac (1+x)(1-sqrt {x)} C. sqrt (1+sqrt {x)}-1 D. https:/img.zuoyebang.cc/zyb_d23ae8cab0bb975c99e95a628d13514e.jpg-cos sqrt (x)