题目

以下检索出文献最少的检索式是(2.0)A. a and b or cB. (a or b) and cC. a or b and cD. a or bE. a and b and c

以下检索出文献最少的检索式是(2.0)

A. a and b or c

B. (a or b) and c

C. a or b and c

D. a or b

E. a and b and c

题目解答

答案

E. a and b and c