综合布线系统的六个子系统:工作区子系统,水平干线子系统,管理间子系统,垂直干线至系统,建筑群子系统,设备间子系统。
A. 对
B. 错
The yang organs are hollow — in fact most of them are shaped as tubes or bags, lie nearer to the surface of the body and are responsible for receiving, separating, distributing and excreting all the vital substances.
If the yang organs don’t transform the vital substances there is nothing for the yin organs tostore. On the other hand if the yin organs can’t store these substances then there is no point in the yang organs transforming them.
慢波睡眠的主要作用是:
A. 体力恢复
B. 睡得更沉
C. 神经发育
D. 感觉消失