如果要改变顺序文件中的单个记录，那么整个文件都要被改写到一个临时文件中。If you want to change a single record in a sequential file, the entire file will be rewritten to a temporary file.
如果要改变顺序文件中的单个记录，那么整个文件都要被改写到一个临时文件中。If you want to change a single record in a sequential file, the entire file will be rewritten to a temporary file.
A.正确
B.错误
正确答案：正确