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单项选择题
A.255.255.255.10
B.255.255.255.240
C.255.255.255.80
D.255.255.255.90
单项选择题
A.mount ;mountall
B.mount; mount
C.mountall; mount
D.mountall ;mountall
单项选择题
A.chmod 777 /n2kuser/.profile
B.chmod 000 /n2kuser/.profile
C.chmod 111 /n2kuser/.profile
D.chmod 222 /n2kuser/.profile