被测实际要素相对其理想要素的变动量叫做（）。
A.形状误差
B.形状公差
C.位置误差
D.位置公差
参考答案：A
It took _____ building supplies to construct these energy-saving houses. It took brains, too. [ ]
A. other than
B. more than
C. rather than
D. less than
无论肾结石是否透光，诊断价值最大的检查方法应为（）
A.IVP
B.腹部平片
C.B超
D.螺旋CT
E.MRU
