从基金股票投资收益率中减去股票指数收益率，再减去行业或部门选择贡献，剩余则为基金股票选择的贡献。（）
参考答案：对
解析：熟悉绩效贡献的分析方法。
Many things that were once considered useful and _____, for example, tobacco, is now thought harmful.
A．beneficial
B．suitable
C．fulfilling
D．accessible
K8－11和QCS－01触媒的活性组分是什么？
