装有护层过电压限制器的单芯电缆线路，每年至少检查一次电压限制器有无击穿或烧熔现象（）。
A. 正确
B. 错误
顾客只购买某企业的产品或服务的直接动力是他对该企业的产品或服务的（）总价值大于总成本。
A. 预期
B. 结算
C. 核算
D. 事后
What is the objective of the superstrict option that can be used when creating mirrors？（）
Allows the mirror partitions to spread across a maximum number of disks.
B. Allows the copy of a partition to be on the same physical volume as the mirrored partition.
C. Prevents partitions allocated to one logical volume mirror from sharing a physical volume with partitions from another logical volume mirror.
D. Forces copies of logical partitions to be housed on different physical volumes， while allowing a single physical volume to be shared by logical volume mirrors.
行政机关应当将有关行政许可的事项等在办公场所公示，下列哪一项不属于必须公示的内容？（）
A. 许可依据
B. 许可程序
C. 需提交的材料目录
D. 许可审查人员资格
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