题目内容
(请给出正确答案)
提问人:网友cooper1919
发布时间:2022-01-07
[主观题]
在综合布线系统中,从某层楼的配线间到一个房间的插座之间的布线叫做 子系统
简答题官方参考答案
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A.Natural selection favors adaptations that help a species to Survive
B.Natural selection works against extreme changes in a species.
C.Natural selection allows helpful, new traits to spread through a population.
D.Natural selection occurs in periods of severe environmental disturbances.
B.more easy than
C.as easier as
D.easy than
B.more easy than
C.not so easy as
D.easy than
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