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It probably won’t surprise you that teens are texting more than ever before. Experts show great concern for teen texting. Students might not learn correct grammar and spelling if they write a lot of text messages. Also all that texting takes away from hours that could be spent studying, exercising, pursuing hobbies, or talking with others face to face. Some kids even sleep with their phones beneath their pillows and wake up several times during the night to text. Dr. Elizabeth Dowdell points out teens need to learn that they can—and should—turn off their phones sometimes. She and her team had two teenagers, Kenny and Franchesca, carry out an experiment. They should obey the rules: No phone for 48 hours. No computer or Internet either, unless it was for schoolwork. Would these two teenagers be able to do it? “I think I’m going to feel really alone,” Kenny worried. Franchesca was nervous but brave. “I’m excited for the challenge,” she said. “I don’t know what’s going to happen.” They handed their phones to their mothers for safekeeping. The challenge was on. The team caught up with Kenny and Franchesca after 48 phone-free hours. “Wow, it was pure suffering,” Kenny joked. “Though life with no phone wasn’t easy,” he admitted, “it had benefits. I felt less stressed because I didn’t have to be involved.” Sure, Kenny missed his friends, and he was sad at times. But he also felt relief from the constant texting. Instead of texting, Kenny went to the gym and caught up on schoolwork. He said that the first night he slept for 10 hours. He also spent time sitting with his family and talking. “I felt closer to my parents,” said Kenny. Franchesca had an even happier result when she put away her phone. “I loved it!” she said. “I was going to the gym and hanging out with friends and playing basketball. I had a wonderful experience.” She slept better too, and she decided to continue the experiment for a while. “I think I’ll be so much smarter and healthier,” she explained. “Everybody in the world should try it.” Kenny doesn’t plan to give up his phone again. But he now knows that he can live without it. “It was a reality check,” said the teen.
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【单选题】下列说法正确的是()。
A.
装配式高层建筑含精装修可在半年内完成
B.
装配式建筑不能完全解决传统建筑方式普遍存在的“质量通病”
C.
装配式建筑的现场用人少,时间短,综合成本降低
D.
装配式建筑的一大变革是将农民工变成操作工人
【多选题】PLC是否可以渗透和融合到DCS中?
A.
PLC 与 DCS 在发展过程中互相渗透,互为补充, PLC 与 DCS 的差别逐渐减小,它们都能构成复杂的分布式计算机控制系统。
B.
PLC 所特有的配置灵活、高可靠性和不断增强的各种控制功能,特别是 PID 回路控制功能增强,使它在过程控制中发挥着越来越重要的作用。
C.
当今的集散控制系统已是是一种广义的概念,已经可以 PLC 、高速总线网和专业厂家的组态软件构成。
D.
两条技术路线,不可以融合。
【单选题】( )是工业化建筑中装配式建筑的主导做法
A.
砌块建筑
B.
大板建筑
C.
框架建筑
D.
盒子结构
【多选题】PLC是否可以渗透和融合到DCS中?
A.
PLC 与 DCS 在发展过程中互相渗透,互为补充, PLC 与 DCS 的差别逐渐减小,它们都能构成复杂的分布式计算机控制系统。
B.
PLC 所特有的配置灵活、高可靠性和不断增强的各种控制功能,特别是 PID 回路控制功能增强,使它在过程控制中发挥着越来越重要的作用。
C.
当今的集散控制系统已是一种广义的概念,已经可以 PLC 、高速总线网和专业厂家的组态软件构成。
D.
PLC 不能渗透到DCS中。
【单选题】关于装配式建筑与建筑产业现代化的关系表述有误的是()。
A.
装配式建筑是推进建筑产业现代化的一个特征表现
B.
装配式建筑是建筑产业现代化的最终目的
C.
装配式建筑是工业化生产方式的一种生产手段
D.
装配式建筑是工业化生产的有效的技术方法和路径
【单选题】关于装配式混凝土建筑说法是正确的有()。
A.
装配式建筑就和搭积木一样将预制构件搭设成一栋建筑物
B.
凡是有预制构件的混凝土结构建筑都叫装配式混凝土建筑
C.
装配式混凝土建筑比现浇混凝土建筑更加节省施工时间
D.
发展装配式建筑是为了建造更加豪华的建筑
【单选题】道家在我国影响深远,下列哪个时期最接近到家的无为而治?( )
A.
光武中兴
B.
贞观之治
C.
开元盛世
D.
文景之治
【简答题】任务1 请到上海机场官网 http://www.shanghaiairport.com/,查询在上海机场经营国际航空货运的航空公司,写出五家航空公司的名称,英文代码。 任务2 如果客户有100KG的货物要分别从空运到洛杉矶、伦敦和东京,请在物流巴巴上查询https://www.5688.com.cn/air/pvg-jnb它们的运费,并在答案中分别写出。
【单选题】关于装配式混凝土建筑说法是正确的有
A.
装配式建筑就和搭积木一样将预制构,搭建成一栋建筑件
B.
凡是有预制构件的混凝土结构建筑都叫装配式混凝土建筑
C.
发展装配式建筑是为了建造更加豪华的建筑
D.
装配式混凝土建筑比现浇混凝土建筑更加节省施工时间
【单选题】()的非淋菌性尿道炎的患者无症状,导致诊断困难。
A.
5%-10%
B.
10%-20%
C.
20%-30%
D.
30%-40%
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