在sciencedirect数据库中要检索包含education和preschool的文献,下列哪个检索式正确?( )
A、educationandpreschool
B、educationANDpreschool
C、EDUCATIONorPRESCHOOL
D、educationORpreschool
发布时间:2024-10-26 16:57:07
A、educationandpreschool
B、educationANDpreschool
C、EDUCATIONorPRESCHOOL
D、educationORpreschool