“标引“是主题词标引操作轨范的()
A、第一轨范
B、初期工作
C、中期工作
D、最后轨范
参考答案:A
The new system has been designed to give students quick and easy ________ to the digital resources of the library.
A.access
B.passage
C.way
D.approach
硫酸钙在片剂中的作用是()
A.稀释剂
B.吸收剂
C.黏合剂
D.润滑剂
E.崩解剂