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单选题
A company uses raw logical volumes. Which command can be used to back up the data in the raw logical volumes to a tape？（）
A
dd
B
tar
C
cpio
D
mksysb
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sar B
iostat C
svmon D
filemon
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A physical volume can belong to more than 1 volume group.C
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The size of a filesystem is always the same size as its logical volume.
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单选题Those who regard natural resources as stacks of raw materials piled up in a storehouse believe that _____.A
the earth’s natural resources will one day be exhaustedB
the earth’s natural resources will not run out since there are numerous storehousesC
the stacks of raw materials can always be renewedD
the stacks of raw materials should be used in a logical way
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