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| To sleep. Perchance to file Findings
published online this week by the Proceedings of the National Academy of
Sciences further support the theory that the brain organizes and stows memories
formed during the day while the rest of the body is catching zzz’s. Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically, they examined the electrical activity emanating from the somatosensory neocortex (an area that processes sensory information) and the hippocampus, which is a center for learning and memory. The scientists found that oscillation in brain waves from the two regions appear to be intertwined. So-called sleep spindles (bursts of activity from the neocortex) were followed tens of milliseconds later by beats in the hippocampus known as ripples. The team posits that th A. There is no relation between memory and hippocampus shrinkage. B. The more the hippocampus shrinks, the poorer one’s memory. C. The more the hippocampus shrinks, the better one’s memory. D. The less the hippocampus shrinks, the poorer one’s memory. [单选题]各型休克最基本的病理生理变化是
A.组织缺氧 B.代谢改变 C.血压下降 D.重要脏器受损 E.微循环灌注不足 [填空题]隔离开关、负荷开关的“ （） ”须加锁。
[单选题]盾构机刀盘开口率是指（）。
A.刀盘正面投影中透光面积与阴影面积的比值 B.刀盘正面投影中透光面积与刀盘总投影面积的比值 C.刀盘正面投影中阴影面积与刀盘总投影面积的比值 [判断题]改变电压的大小,主要是改变网络中有功功率分布( )
A.正确 B.错误 [多选题]合并单元发送数据给间隔层设备的同步原则是（ ）。
A.点对点—光纤直连—谁使用谁同步 B.点对点—光纤直连—谁发送谁同步 C.组网—经过交换机—谁发送谁同步 D.组网—经过交换机—谁使用谁同步 [单项选择]实施再生制动的条件是电机反馈给接触网的电压必须（）触网上的电压。
A. 小于 B. 大于 C. 等于 D. 无要求 [判断题](1分)一个工作负责人可以同时执行多张工作票,工作票上所列的工作地点,以一个电气连接部分为限。( )
A.正确 B.错误 我来回答: 提交
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