在X荧光分析中，已知某元素A，其分析强度Ia与浓度Ca保持线性关系，现称取含A元素的M试样2.0000克，试样制成玻璃片后，测得元素A的荧光强度I2为8Kcps；再称取M试样2.0000克，加入A元素0.0100克，制成玻璃片后，测得元素A的荧光强度I2为14Kcps，求M试样中A元素的质量百分数。

ing problems to Problem 5 Two important clients called to ask for products with new features and better designs.A．AdministrativeDepartmentB．ProductionDepartmentC．PublicRelationsDepartmentD．Research﹠DevelopmentDepartmentE．Sales﹠MarketingDepartment