[单项选择]库文件TEST.DBF、尚未打开,要将该文件复制为数据库文件TEST1.DBF,应该使用命令( )。 A. COPY TO TEST1.DBF B. COPY STRUCTURE TO TEST1.DBF C. COPY FILE TEST.DBF TO TEST1.DBF D. COPY INDEXES TEST.DBF TO TEST1.DBF
A. to prevent people from putting rubbish into holes B. to find a way of destroying all kinds of waste C. to extract useful raw materials from the waste D. to find out how much raw materials could be provided 参考答案:D 答案解析:细节题。根据第三段第二句可知,正确答案是D项。