更多“ZJ40/2250DH中泥浆泵的最高泵压为（）MPa。”相关的问题
可视化渠道信息统一管控平台一、二级分行管理人员配置岗位为（）。
A.可视化营运管理岗
B.自助数据应用岗
C.可视化渠道管理岗
D.业务维护岗
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使未饱和空气达到饱和或过饱和的途径是（）
A.增加水汽 B.提高温度 C.A+B D.D.B.C都对
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化验室测试的外在水分和内在水分，除与煤中不同结构状态下的外在水分和内在水分有关外，还与测试时空气的（）有关。
A.湿度
B.水分
C.温度
D.成分
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Text 1 A study by scientists in Finland has found that mobile phone radiation can cause changes in human cells that might affect the brain, the leader of the research team said. But Darius Leszczynski, who headed the 2-year study and will present findings next week at a conference in Quebec (魁北克), said more research was needed to determine the seriousness of the changes and their impact on the brain or the body. The study at Finland’s Radiation and Nuclear Safety Authority found that exposure to radiation from mobile phones can cause increased activity in hundreds of proteins in human cells grown in a laboratory, he said. "We know that there is some biological response. We can detect it with our very sensitive approaches, but we do not know whether it can have any physiological effects on the human brain or human body," Leszczynski said. Nonetheless, the study, the initial findings of which were published last month in the scientific journal Differentiation, raises new questions about whether mobile phone radiation can weaken the brain’s protective shield against harmful substances. The Study focused on changes in cells that line blood vessels and on whether such changes could weaken the functioning of the blood-brain barrier, which prevents potentially harmful substances from entering the brain from the bloodstream, Leszczynski said. The study found that a protein called hsp27 linked to the functioning of the blood-brain barrier showed increased activity due to irradiation and pointed to a possibility that such activity could make the shield more permeable(能透过的), he said. "Increased protein activity might cause cells to shrink—not the blood vessels but the cells themselves—and then tiny gaps could appear between those cells through which some molecules could pass," he said. Leszczynski declined to speculate on what kind of health risks that could pose, but said a French study indicated that headache, fatigue and sleep disorders could result. "These are not life-threatening problems but can cause a lot of discomfort," he said, adding that a Swedish group had also suggested a possible link with Alzheimer’s disease. "Where the truth is, I do not know," he said. Leszczynski said that he, his wife and children use mobile phones’, and he said that he did not think his study suggested any need for new restrictions on mobile phone use.
A．People will be forbidden to use mobile phones.B．People dare not use a mobile phone because of its radiation.C．People will continue to use mobile phones.D．There will be new restrictions on the use of mobile phones.
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下列有关《驾驶、轮机联系制度》的叙述哪项正确（）。
A.因情况紧急，不立即停车就会危及主机或人身安全时，轮机长可立即停车 B.判断将有风暴来临时，值班驾驶员应及时通知值班轮机员做好各种准备 C.主机的各种车速由主机的性能指标决定 D.抵港前，轮机长应将本船存油情况告知驾驶台
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假设一厂家生产的每台仪器，以概率0.70可直接出厂；以概率0.30需进一步调试，经调试后以概率0.80可以出厂，以概率0.20定为不合格品不能出厂．现该厂新生产了n(n≥2)台仪器(假设各台仪器的生产... 全部能出厂的概率α；
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收付实现制确认收入和费用的标准是
A. 应收应付 B. 实收实付 C. 应收实付 D. 实收应付
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全价饲料生产过程中的常用的混合机是卧式螺带混合机。
A.对 B.错
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数量性状一般受（）基因控制
A.多个
B.微效多
C.遗传
D.少数
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E-R模型中的一个联系转换为一个关系模式。如果联系是m：n的，则关系模式的键由与该联系相连的各（）的键组合而成。
A.实体集 B.属性集 C.联系集 D.规则集
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施工项目只有一个成本核算对象（单位工程），其竣工成本分析的依据就是（）。
A.成本报表
B.项目经理部的经营效益
C.当年该核算对象的竣工成本资料
D.企业的经营效益
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女性，50岁，呕血不止，烦躁、面色苍白、出冷汗，此时应首先给予的急救措施是（）
A.快速输血
B.快速补液
C.口服去甲肾上腺素
D.手术止血
E.肌内注射巴曲酶
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在扫描输入阶段，PLC将所有输入端的状态送到（）保存。
A.输出映像寄存器
B.变量寄存器
C.内部寄存器
D.输入映像寄存器
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