Bob fails to attend the evening school. He ______ sick, because he never asks for leave.
A. maybe
B. can be
C. must be
D. is
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如果一个索引节点为128B,指针长4B,状态信息占用68B,而每块大小为8KB。问在索引节点中有多大空间给指针使用直接、一次间接、二次间接和三次间接指针分别可表示多大的文件
空闲磁盘空间的管理常采用哪几种方式UNIX系统采用的是何种方式
The store displayed its most ______ products in the front window.
A. model
B. present
C. distinctive
D. favorite