—What is your father's brother?

—He is _____.[ ]

A. a teacher

B. fine

C. tall

D. doing his homework

制造计量器具的单位，必须经县级以上人民政府计量行政部门考核，取得（）。

A.生产许可证

B.计量器具准产证

C.制造计量器具许可证