一个测定方法测定结果的精密度好,准确度也应该高的前提是
A. 消除误差
B. 消除了系统误差
C. 消除了偶然误差
D. 多做平行测定次数
E. 消除了干扰因素
不属于系统误差者为
A. 方法误差
B. 操作误差
C. 试剂误差
D. 仪器误差
E. 偶然误差
His parents' strong objections to his job choice only ___________ his persistence.
A. intensified
B. strengthened
C. enforced
D. furnished
采用滴定分析法测定药物含量时,其测定结果f10RSD为0.23825%,应修约为
A. 0.234%
B. 0.24%
C. 0.23%
D. 0.2%
E. 0.20%