题型:选择题 题类:月考试卷 难易度:较难
若\({{\left( 1-2x \right)}^{2018}}={{a}_{0}}+{{a}_{1}}x+{{a}_{2}}{{x}^{2}}+...+{{a}_{2018}}{{x}^{2018}}\left( x\in R \right)\),则\(\dfrac{{{a}_{1}}}{2}+\dfrac{{{a}_{2}}}{{{2}^{2}}}+\dfrac{{{a}_{2018}}}{{{2}^{2018}}}\)的值为\((\) \()\)