1块标称为10~100V的电压表,在标定示值为60.0V处用标准表检定为59.8V,则此表的引用误差为()。
(A)-0.2%
(B)-2%
(C)0.2%
(D)2%
参考答案:C
25. ------ You know what? Wang Wei wants to be another Yao Ming and play in NBA.
------ Are you kidding? He will never _____ a super star.
A. change B. make C. turn D. Get
常用的不锈钢管有哪些?其主要用途是什么?