填空题
A--change name B--checking for C--check a disk and displays a status report D--clear command history E--copy one or more files to another location F--delete a directory and all the subdirectories and files in it G--display files in specified directory and all subdirectories H--expand memory I--find file J--fix errors on the disk K--press a key to resume L--repeat last find M--save as N--switch to O--lodging