()可以进行验印操作,但不得同时具有录入、复核权限。
A.建库操作员
B.建库复核员
C.验印操作员
D.都可以
参考答案:A
Offered the position of chairman, Smith _____, preferring to keep his current job. [ ]
A. decreased
B. retired
C. left
D. declined
在建筑石材的性能评价中,下列哪项不正确
A.岩石中SiO2含量越高,耐酸性越强B.岩石晶粒越粗,强度越高C.致密的岩石抗冻性好D.深成岩和变质岩易于取得大材,并可雕琢加工