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【单选题】
帧中继仅完成( )核心层的功能,将流量控制、纠错等留给智能终端完成,大大简化了节点为机之间的协议。A.
链路层和网络层
B.
网络层与传输层
C.
传输层和会话层
D.
物理层和链路层
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【简答题】Genes (9) in determining performance, but they're not everything.
【单选题】Some genes in child-mother pairs will be unique to the mother in that
A.
these genes haven't been passed to the child.
B.
less than half of the genes have been passed to the child.
C.
these genes come from the father.
D.
the child is not willing to inherit these genes.
【单选题】Hox genes that are expressed more anteriorly comprise Hox genes
A.
with lower numbers, such as Hoxa1.
B.
with higher numbers, such as Hoxa13
C.
with all possible numbers and letters, since there is no system tic relationship between the gene designations and the expression patterns of the Hox genes
D.
with letters, so that anterior genes are Hoxa1-13, and posterior genes are Hoxp1-13
【单选题】What does Sidney Pierce say about genes from an alga?
A.
They are stolen from animals like the sea slug.
B.
They can't function unless exposed to sunlight.
C.
They don't usually function inside animals cells.
D.
They can readily be converted to sea slug genes.
【单选题】Hox genes that are expressed more anteriorly comprise Hox genes
A.
with all possible numbers and letters, since there is no system tic relationship between the gene designations and the expression patterns of the Hox genes
B.
with higher numbers, such as Hoxa13
C.
with letters, so that anterior genes are Hoxa1-13 , and posterior genes are Hoxp1-13
D.
with lower numbers, such as Hoxa1 .
【单选题】Warsaw-Oxford Rules 1932 provides standard interpretation for( )。
A.
FOB
B.
CIF
C.
CFR
D.
FAS
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