单项选择题
在下列协议中,使用带位填充的首尾标志法组帧是( )。
A.DDCMP
B. HDLC
C.BSC
D.SLIP
A.DDCMP
B.BSC
C.SLIP
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单项选择题
( ) gifted a person is, he can hardly expect to make progress without hard work.A、WhateverB、WheneverC、HoweverD、Although
A.
A、Whatever
B、Whenever
C、However
D、Although
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单项选择题
受外力发生弯曲,而外力解除后变形不能恢复原状,叫做()。
A.刚度
B.挠度
C.弹性形变
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