[单选题]B-trees have small height so as to B树的层数少有助于：0nZ答案窝(daanwo.com)-大学生作业答案及考资分享平台
Areduce the number of I/O operations 减少I/O次数0nZ答案窝(daanwo.com)-大学生作业答案及考资分享平台
Breduce the time consumption for a single I/O 减少每次I/O的时间0nZ答案窝(daanwo.com)-大学生作业答案及考资分享平台
Creduce the asymptotic time complexity for seaching 降低查找的渐进时间复杂度0nZ答案窝(daanwo.com)-大学生作业答案及考资分享平台
Dreduce the storage requirement 节省存储空间