更多““400号混凝土”，其中“400”的含义是（）。”相关的问题
关于合伙企业与个人独资企业的表述，下列哪一选项是正确的？A. 二者的投资人都只能是自然人 ###SX
关于合伙企业与个人独资企业的表述，下列哪一选项是正确的？
A. 二者的投资人都只能是自然人
B. 二者的投资人都一律承担无限责任
C. 个人独资企业可申请变更登记为普通合伙企业
D. 合伙企业不能申请变更登记为个人独资企业
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You can see a cover of the New Yorker in the video. On the cover, human beings are begging for money from AI. AI refers to ________ intelligence.
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伟伯耐水瓷砖背胶通过了哪个执行标准？（）
A.JC/T984-2017
B.JC/T907-2018
C.JC/T2090-2017
D.JC/T547-2017
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Who Want to Live ForeverIf your doctor could give you a drug that would let you live a healthy life for twice as long, would you take itThe good news is that we may be drawing near to that date. Scientists have already extended the lives of flies, worms and mice in laboratories. Many now think that using genetic treatments we will soon be able to extend human life to at least 140 years.This seems a great idea. Think of how much more time we could spend chasing our dreams, spending time with our loved ones, watching our families grow and have families of their own."Longer life would give us a chance to recover from our mistakes and promote long term thinking," says Dr. Gregory Stock of the University of California School of Public Health. "It would also raise productivity by adding to the year we can work."Longer lives don"t just affect the people who live them. They also affect society as a whole. "We have war, poverty, all sorts of issues around, and I don"t think any of them would be at all helped by having people live longer," says US bioethicist Daniel Callahan. "The question is "What will we get as a society" I suspect it won"t be a better society."It would certainly be a very different society. People are already finding it more difficult to stay married. Divorce rates are rising. What would happen to marriage in a society where people lived for 140 years And what would happen to family life if 9 or 10 generations of the same family were all alive at the same timeResearch into ageing may enable women to remain fertile for longer. And that raises the prospect of having 100-year-old parents, or brothers and sisters born 50 years apart. We think of an elder sibling as someone who can protect us and offer help and advice. That would be hard to do if that sibling came from a completely different generation.Working life would also be affected, especially if the retirement age was lifted. More people would stay in work for longer. That would give us the benefits of age-skill, wisdom and good judgment.On the other hand, more people working for longer would create greater competition for jobs. It would make it more difficult for younger people to find a job. Top posts would be dominated by the same few individuals, making career progress more difficult. And how easily would a 25-year-old employee be able to communicate with a 125-year-old bossYoung people would be a smaller part of a society in which people lived to 140. It may be that such a society would place less importance on guiding and educating young people, and more on making life comfortable for the old.And society would feel very different if more of its members were older. There would be more wisdom, but less energy. Young people like to move about. Old people like to sit still. Young people tend to act without thinking. Old people tend to think without acting. Young people are curious and like to experience different things. Old people are less enthusiastic about change. In fact, they are less enthusiastic about everything.The effect of anti-ageing technology is deeper than we might think. But as the science advances, we need to think about these changes now."If this could ever happen, then we"d better ask what kind of society we want to get," says Daniel Callahan. "We had better not go anywhere near it until we have figure those problems out."
A．Marriages in the US today are quite unstable.B．More and more people in the US today want to get married.C．Living longer would make it easier for people to maintain their marital ties.D．If people live longer, they would stay in marriage longer.
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增值业务入网是指通过增加软硬件、（）、设备或路由割接调整等操作实现增值业务可用的过程。
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人行天桥的梯道和坡道下部净高在多少米范围内应设防护措施()。
A.2.4mB.2.2mC.2.1mD.2.0m
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发电机失磁后，对系统和发电机本身有何不良影响？
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胶轮车液力变矩器的正常油温为（）℃
A、80～100
B、80～120
C、70～100
D、70～120
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输气管线割开的两端未放置隔离球时，空气会大量进人管内，管内沉积的硫化铁粉末可能自燃而形成火源。
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排球比赛中A队队员在接发球时，用脚将球踢到了对方场内，裁判员判其违例。
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建设工期是从开工建设时算起，到（）时停止。
A.完工 B.完成承包工程全部设计内容 C.全部建成投产或交付使用 D.竣工验收合格
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由正式文件明文规定,群体成员有固定的编制,有规定的权利和义务,有明确的职责分工的群体是( )
A . 实属群体B . 参照群体C . 正式群体D . 非正式群体
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信息的传递方式有（ ）种。
A．3
B．4
C．5
D．6
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全腹膨隆、腹外形随体位的改变而改变，见于______
A．巨大卵巢囊肿
B．人工气腹
C．腹腔积液
D．肠梗阻
E．肥胖症
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