| Don’t get too close to a tired teen
;you could start losing sleep as well.When one teenager starts sleeping less,
her friends and others in her social {{U}} (67) {{/U}} soon lose
sleep, too, according to new research. Our social networks can {{U}} (68) {{/U}} our behaviors and moods. Political scientist James Fowler of the University of California has studied these effects and previously found that obesity, smoking, and {{U}} (69) {{/U}} happiness can spread through networks of people {{U}} (70) {{/U}} based on their relationships. Fowler {{U}} (71) {{/U}} his study of a network of more than 8000 7th-to 12th-grade students and their sleeping and smoking {{U}} (72) {{/U}}. He and colleagues {{U}} (73) {{/U}} a web of connections between each student and his or her friends. In one of these friend webs, a gang of sleepless boys A. founded B. found C. implied D. confessed [单选题]UDP使用（）提供可靠性
A.传输控制 B.应用层协议 C.网络层协议 D.网际协议 [判断题]若无法观察到停电线路、设备的断开点，应有能够反映线路、设备运行状态的电气和机械等指示。
A.正确 B.错误 [简答题]空气弹簧的正常工作高度是多少？其高度的保证通过什么实现？
[单选题]多旋翼飞行器如果重新组装后,不需要校准哪些传感器? ( )
A.GPS B.磁罗盘 C.气压计 [多选题]在配电线路和设备上工作保证安全的技术措施有(
)。 A.停电 B.验电 C.接地 D.悬挂标示牌和装设遮栏(围栏)。 [多项选择]暑邪的性质和致病特点：
A. 暑为阳邪 B. 其性升散 C. 多挟湿 D. 暑性重浊 E. 易伤津耗气 我来回答: 提交
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