On a Series 1010 lightweight access point， the alarm LED is flashing red， and all other LEDs are off. What is the lightweight access point indicating？（） ["It has lost contact with controller.","Its IP address already exists.","It requires a code upgrade.","It is operating normally."]
以下不是配送的定价方式的是（）。 ["单一价格法","分区价格法","分线价格法","分货价格法"]
中国有全国性社会团体近2000个，列为行政编制并接受财政拔款的社会团体约（）个。 ["A.200 ","B.300 ","C.400 ","D.250"]
人际关系的作用主要有（） ["影响团体凝聚力","影响个体活动效率","影响个体活动效率","影响个体活动效率"]
关于睡眠周期描述错误的是（） ["睡眠周期有快速眼动睡眠和非快速眼动睡眠","第一阶段是浅眠状态，特征是非快速眼球运动、肌肉放松、体温降低等","快速眼球运动是第二阶段的特征，也是深眠的状态。","第四阶段是快速眼球睡眠阶段"]
什么是激素？激素在信息传递上的特点？激素作用的一般特性？
