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【单选题】
Which statement about the ip classless router command is true?（）A.
The ip classless command is enabled by default in recent versions of IOS.
B.
The ip classless command should only be enabled when static routing is being used instead of a routing protocol.
C.
The ip classless command should be enabled by the network administrator whenever RIPv1 or IGRP is being used.
D.
The ip classless command should be enabled by the network administrator whenever OSPF, RIPv2, or EIGRP is being used.
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举一反三
【单选题】In assessing a patient with osteogenesis imperfecta, a history of bone fractures, as wel1 as blue sclerae, are noted. These findings are an example of
A.
allelic heterogeneity
B.
gain-of-function mutation
C.
locus heterogeneity
D.
multiple mutations
E.
pleiotropy
【单选题】Tom, where did you put the ______ cups?
A.
blue two coffee
B.
two blue coffee
C.
two coffee blue
D.
blue coffee two
【单选题】The cloth is ______.
A.
as blue as green
B.
bluer than green
C.
more blue than green
D.
so blue as green
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