A. 非抽样误差
B. 抽样误差
C. 抽样误差和非抽样误差
D. 所有误差
[单选题]_________________( )47.A. it’sB. itsC. itD. is
47.样品预处理的目的是:( )A. 改变样品的状态B. 使样品状态与测定方法相适应C. 改变组分状态D. 使组分转化为离子E. 以上说法都对
[单选题]47. —_______ will you stay in Shenzhen for your holiday?—For about two weeks.A. How oftenB. How longC. How soonD. What time
[单选题]47.—I really hope to keep in touch with Lily.—Sorry.l don-t know _________ .A. what her name isB. what her job isC. what her number isD. what is her number
47.絮状表皮癣菌属于()A. 毛癣菌属B. 小孢子菌属C. 毛霉菌属D. 表皮癣菌属E. 曲霉属
47.桡骨头半脱位的治疗措施是()A. 手法复位不必固定B. 切开复位内固定C. 切开复位韧带修复D. 手法复位外固定E. 切开复位外固定
47.判断题创业的核心是盈利。A. 对B. 错