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超声是指振动频率每秒在()Hz以上,超过人耳听觉值上限的声波。

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During an attempt to mount filesystems on the datavg volume grou, the following error message occurs: "0506-323 Cannot get information about log device loglv00." The error is due to the fjslog used by these filesystems is located on a bad disk.Which of the following procedures should be performed to fix the error?()

A. Run fsck on all filesystems using loglv00
B. Run the logform command against loglv00
C. Recreate the filesystems and restore from a backup
D. Create a new jfslog and change /etc/filesystems to point to this log

简述唐代“健舞”、“软舞”的艺术特色及其包含的主要舞.

为了保持良好的形象,导游员在礼仪上应做好的准备是()。

A. 男导游员穿圆领汗衫
B. 女导游员使用香水
C. 不要吃葱.蒜等有气味的食物
D. 戴漂亮贵重的饰品

约翰•杨在担任()公司CEO期间,一直在实践“结果模式”的管理方式。

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