更多“轨道的作用是把车轮的集中载荷传播、分散到地面和井下巷道的底板”相关的问题
采用共享栈的好处是（）。A．减少存取时间，降低发生上溢的可能B．节省存储空间，降低发生上溢的可能
采用共享栈的好处是（）。A．减少存取时间，降低发生上溢的可能B．节省存储空间，降低发生上溢的可能C．减少存取时间，降低发生下溢的可能D．节省存储空间，降低发生下溢的可能
A．减少存取时间，降低发生上溢的可能B．节省存储空间，降低发生上溢的可能C．减少存取时间，降低发生下溢的可能D．节省存储空间，降低发生下溢的可能
B．节省存储空间，降低发生上溢的可能C．减少存取时间，降低发生下溢的可能D．节省存储空间，降低发生下溢的可能
C．减少存取时间，降低发生下溢的可能D．节省存储空间，降低发生下溢的可能
D．节省存储空间，降低发生下溢的可能
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男，45岁。既往体健，查体眼睑及双下肢中度水肿，心肺（-）、腹部（-）、双肾区叩痛（+）。实验室检查：尿常规为，Pro（++++）、WBC2～5／HPF，RBC+／HPF，咽拭子培养为乙型溶血性链球菌生长，24h尿蛋白定量为5．2g依据血液生化检查：BUN62．5mmol／L，SCr526．8pmol／L。该患者可能还存在的诊断为（）
A . A.肾小管性酸中毒
B . 急性肾功能衰竭
C . 慢性肾功能衰竭
D . 糖尿病肾病
E . 红斑狼疮性肾炎
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A .
太平天国农民战争B .
三元里人民抗英斗争C .
中日甲午战争D .
义和团运动
汉译英：“（海运）提单；报关单”，正确的翻译为（）。
A．bill of ladin9; bill of loadin9
B．bill of ladin9; bill of entry
C．bill of entry; bill of loading
D．bill of loadin9; bill of lading
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增产的时候提高生产率，减产的时候降低生产率，则不是好的改善。
A . 正确
B . 错误
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鼎汉电源屏正常工作时，D级防雷器盒输出防雷器面板上状态指示灯应灭，防雷保险管正常。
A.对 B.错
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The boy is unlike his mother, ______ he
A. isB. isn'tC. doesn'tD. does
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A . 行为监测
B . 刺激
C . 控制
D . 弱化行为
E . 强化行为
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可被认定为抵抗伤的有：（）
A.虎口的切割创
B.腹部的刺创
C.头部的砍创
D.前臂的挫裂创
E.前臂的皮下出血
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（）通常负责设计和实现可执行的代码方案、测试开发出了的组件和分析运行时情况以去除可能存在的错误。
A.软件架构师B.软件工程师C.业务分析师D.开发人员
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判断折线段方向的方法是根据形成这条折线段上每条线段所在()的结果的符号判断。
A.向量的和
B.向量的差
C.向量的叉积
D.向量的点积
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聊天工具栏支持添加那些应用（）
A.原生应用
B.创建应用
C.第三方应用
D.小程序
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Owing to the insufficient gas supply in the United States, the gas price has dramatically risen. The new gas price reality and the policy decisions it may trigger will undoubtedly lead to critical financial implications for some individuals or companies, but the situation can hardly be termed a 'national crisis' or even a 'shortage'. What is true is that buyers—particularly those in the chemical industry and in independent power generation will not be able to acquire the quantity of gas they wish at the prices they wish to pay, or even at prices that will allow them to remain competitive in their markets, particularly during peak demand seasons. Over the next year or two, the result will be higher, and more volatile prices, to be sure, but there are market-driven adjustment mechanisms even in the short term, e.g., more electric power from coal and oil, reduced production of domestic chemicals, and a commensurate substitution of imports. Consumers and companies will feel the economic pinch of higher prices; particularly, if we experience an exceptionally hot summer and a winter, when average temperatures were 20% colder than the year before in the Northeast. Still, the United States faces neither the specter of economic recession—at least not solely due to gas prices—nor of freezing families unable to 'obtain gas to heat their homes. Given this new price plateau, demand adjustments will also take place and vary across regions of the United States and across industries, with power generation and chemicals perhaps the most affected. Some in those industries may find that their facilities are no longer financially viable at the new price plateau, and there will likely be another round of industrial restructuring not unlike others that have resulted from international differences in resource and labor costs—lest we forget, natural gas is still abundant and very low cost in other countries such as Trinidad, Qatar, and Iran, just as labor is abundant and low cost in China, Indonesia, and parts of Latin America. From a policy perspective, the United States needs to carefully evaluate a series of trade-offs between environmental concerns and economic growth. The gas price experiences of the last two years are the first real tastes of the economic costs of a gas-based environmental strategy. Evaluating these trade-offs needs to be done with a level head and a clear understanding of those trade-offs.What is the main topic of the article?A．American economy is strongly hit by the high prices of gas.B．American economy is affected by the high price of gas, but it is not a crisis.C．American economic policy is a failure.D．The prices of gas will rise in the following years.
A.B.g.,C.D.E.WhatF.AmericanG.B．AmericanH.C．AmericanI.D．The
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绝缘基本安全用具能长时间承受电气设备电压，但不要求承受过电压
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