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【单选题】
ping命令的功能是测试网络的连通性,它所基于的协议是A.
ICMP;
B.
IP;
C.
TCP;
D.
ARP;
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】Huntington based his conclusions on ______.
A.
records of changes in his own intelligence
B.
work with peoples in different climates
C.
records of temperature changes
D.
all of the above
【判断题】The cash flow effect from a change in Net Working Capital is equal in size and opposite in sign to the changes in Net Working Capital.()
A.
正确
B.
错误
【单选题】Which sentence best describes Jacky's Net life?
A.
He hates the Net.
B.
He will be at a loss when not sitting in front of the computer.
C.
He decides to spend less time on it.
D.
He likes everything on the internet.
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