为使分析结果的误差限定在要求的范围内,样品含量的测定范围应限制在校准曲线的线性范围内。
参考答案:对
下列先心病中,不可能发生艾森曼格综合征的是()
A.肺动脉口狭窄
B.房间隔缺损
C.室间隔缺损
D.动脉导管未闭
E.主肺动脉窗
Is a gold mine an example of a renewable or non-renewable resource and is the supply curve of gold perfectly elastic or inelastic in theory Type of resource Supply curve() ①A. Renewable Inelastic ②B. Renewable Elastic ③C. Non-renewable Elastic
A. ①
B. ②
C. ③