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【简答题】
国家实行劳动者每日工作8小时，每周工作（）的工作。
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皮皮学刷刷变学霸
举一反三
【单选题】When you use the ping command to send ICMP messages across a network, what's the most common request/reply pair you'll see? (Select one answer choice)
A.
Echo request and Echo reply
B.
ICMP hold and ICMP send
C.
ICMP request and ICMP reply
D.
Echo off and Echo on
E.
None of the above
【单选题】If you want to lose weight, you should not take such food ______ really necessary.
A.
as is
B.
as it is
C.
as it was
D.
as was
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