Some advanced materials are an old standard with a new twist. The newest fiberoptic cables that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane._______________________________________________________________________________
Some advanced materials are an old standard with a new twist. The newest fiberoptic cables that carry telephone calls cross-country are made of glass so transparent that a piece of 100 miles thick is clearer than a standard window pane.
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These boxes were made of various _materials_______, including steel, wood, and paper. A. partsB. ideasC. sortsD. materials
如果使用ln命令将生成了一个指向文件old的符号链接new，如果你将文件old删除，是否 还能够访问文件中的数据()。A.不可能再访问B.仍然可以访问C.能否访问取决于file2的所有者D.能否访问取决于file2的权限
What command would an operator use to move a file from the ／old_dir directory to the ／new_dir directory without changing the file name?() A. mv /old_dir/file /new_dirB. mv -p /old_dir/file /new_dirC. mv -k /old_dir/file /new_dirD. mv /old_dir/file /new_dir/new_file
330038003000301585063878906把将字符串s中的一个子串替换成另一个指定的字符串所用到的函数是A．330038003000301585063878906 s.replace(old, new [, max])B．s.rindex(str, beg=0, end=len(string))C．s.strip([chars])D．s.changeplace(old, new [, max])
8、使用 ln 命令可生成一个名为 old 文件的符号链接文件 new，然后删除 old 文 件，利用 new 文件是否还能够访问到文件中的数据？（)A．不可能再访问。B．仍然可以访问。C．能否访问取决于 file2 的所有者。D．能否访问取决于 file2 的权限。
用vi打开一个文件，如何用字母”new”来代替文件中所有的字母”old”A．:r/old/newB．:s/old/newC．:1,$s/old/new/gD．:%s/old/new/g