Companycom has been performing scheduled backups of their data to tape using "tar" in a script for over one year with no problems. Recently, the tar command is returning a non zero return code during the backup phase, causing the script to fail. What is the primary cause of this problem?（） The files have grown to over eight gigabytes in size。 The file systems are corrupt, and fsck should be run。 The tape block size has been changed from the default。 The user’s limit has been changed to less than eight gigabyte。
工人的日常安全教育应以“周安全活动”为主要阵地进行，并对其进行（）的安全教育考核 每季一次。 每月一次。 每半年一次。 一年一次。
Which of the following statements is TRUE about mounting a file system?（） A file system cannot be mounted on a directory containing data.。 Mounting a file system on a mount point containing data will delete the data.。 Mounting a file system on a amount point containing data will make the data temporarily inaccessible.。 A systems administrator must manually create an empty directory prior to mounting an AIX JFS.。
立式气瓶的充装气体名称应按瓶的环向横列于瓶高（）处；单位名称应按瓶的轴向竖列于气体名称居中的下方或转向180度的瓶面。 3/4。 1/2。 1/3。
改革开放后，我国城市社会组织发生了巨大变化，表现在（）。 单位的社会职能弱化。 新型组织迅速发展。 社区功能强化。 以单位为核心。
如果某房地产的售价为5000万元，其中建筑物价格3000万元，地价2000万元，该房地产的年客观收益为450万元，建筑物的资本化率为10%，那么土地的资本化率最接近于（）。
