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【单选题】
关于CSMA／CD的描述中，错误的是A.
是带冲突检测的载波侦听多路访问的缩写
B.
发送数据前侦听传输介质是否空闲
C.
用于解决令牌环网的介质访问控制问题
D.
在发生冲突的情况下需要延迟重发
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皮皮学刷刷变学霸
举一反三
【单选题】It has been proved ( )
A.
what the brains of men and women are not entirely the same.
B.
what that the brains of men and women are not entirely the same.
C.
that the brains of men and women are not entirely the same.
D.
the brains of men and women are not entirely the same.
【单选题】The sum of all of the debit items in the balance of payments ( ).
A.
Equals the overall balance
B.
Equals the sum of all credit items
C.
Equals “compensating” transactions
D.
Equals the sum of credit items minus errors and omissions
【单选题】The sum of all of the debit items in the balance of payments ( ) :
A.
Equals the overall balance.
B.
Equals the sum of all credit items.
C.
Equals the compensating transactions .
D.
Equals the sum of credit items minus errors and omissions.
【简答题】All individuals are required to ________ to the laws made by their governments. A) obey B) conform C) concede D) observe
【简答题】基准一般分为 和 两大类。
【简答题】基准根据作用不同,一般可以分为____和____两大类。
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