由于废碱中含NaOH极少，因而不会影响环保。

T-340废碱中，NaOH的浓度越低越好。

干燥器再生过程中，再生气阀与物料阀不能同时打开。

干燥器的再生步骤是冷吹、升温、恒温、降温。

备用气相干燥器运行充压结束，打开进出口阀门后即可切出运行气相干燥器。

干燥器恒温是为了脱水彻底。

V-370A/B裂解气干燥器的运行周期为24小时。

冷泵正常使用均在低温条件下运转，如不预冷，泵构件因温度低收缩发生变形。

冷泵原始启动必须先干燥，后预冷。

冷泵气相预冷合格后方可进行液相预冷。

冷泵原始启动先干燥，后灌泵，再充压。

开车过程中冷泵如来不及预冷，可以不预冷。

将裂解气进行压缩的目的是使后系统较易分离出氢气、、CH4，以利于后系统操作.

裂解气压缩机设吸入缓冲罐的目的之一是脱除裂解气中夹带的水和重烃。

压缩机油路系统开车时，必须先投用隔离气系统。

裂解气压缩机开车时，在建立碱循环过程中一定要经常进行室内外液位校对，防止塔釜满塔，碱液倒流入裂解气管线。

C-300压缩机前四个吸入罐依次是V-310、V-320、V-330、V-340。

为了使压缩机充分预热，开车前必须对透平长时间低速暖机。

C-650是一个四段压缩机，可提供-40℃、-21℃、-7℃、7℃。

V-660的作用是E-649和E-418的热虹吸罐。

C-650透平为抽气冷凝式透平。

C650去各段的最小返回量是从E-699A～F下游抽出的。

丙烯制冷压缩机段间吸入罐倒空时，应先泄压后导液。

C-650压缩机系统实气置换时应注意机体充压、泄压缓慢进行，防止压缩机的密封系统有大的波动。

C-600三段抽出气体是T-470塔回流的主要来源。

E-425的冷却介质是从V-620中抽出的。

乙烯制冷压缩机出口冷凝器用丙烯做冷剂，所以冷却水参数变化对乙烯制冷压缩机制冷效果没有直接影响。

乙烯压缩机油路系统开车时，隔离气系统不一定要投用。

C600制冷压缩机系统开车前先充液态冷剂，然后进行气态冷剂的置换，这样可以节约实气置换的时间。

有乙烯开车时，要先运行乙烯压缩机制冷系统，以减少开车时间。

有乙烯开车时，装置要先引进丙烯,先运行丙烯压缩机制冷系统，以减少开车时间。

乙烯精馏塔和C-600构成开式热泵。

开式热泵系统降低塔压有利于提高乙烯与乙烷的相对挥发度，提高精馏塔处理量，同时压缩机压缩比增大，使功耗增加。

循环冷却水水质的变化对乙烯装置没有影响。

C-300一段吸入温度高将导致C-300联锁跳车。

P-310泵不上量会造成V-310液位超高。

塔罐倒空时，要先泄压，后倒空。

提高碱洗塔的操作温度，黄油生成量一定减少。

对于裂解气酸性气体的碱洗来说，碱浓度越高越好。

干燥器切换时，动作要迅速。

时间___

“机不可失，时不再来”指的是___

是 ___

在客观规律面前，人的主观能动性表现在___

事物的联系和运动之间的关系___

唯物辩证法的总特征是___

___

“割下来的手就不再是人手”这句话体现了___

唯物辩证法认为发展的实质是___

区分新事物和旧事物的标志在于看它们___

质量互变规律揭示了___

质和事物的存在是___

在实际工作中，要注意掌握分寸，防止“过”或“不及”，其关键在于___

区分量变和质变的根本标志是看___

量变的复杂性是指___

量变中的阶段性部分质变表现了___

量变中的局部性部分质变是___

揭示事物发展的趋势和道路的规律是___

“肯定和否定相互渗透，在一定意义上，肯定就是否定。”这是一种___

事物的否定方面是指___

作为辩证的否定的“扬弃”是___

辩证的否定是事物发展的环节,因为辩证的否定___

否定之否定规律___

事物发展的周期性体现了___

直线论的错误在于只看到___

循环论的错误在于___

对立统一规律揭示了___

唯物辩证法的实质和核心是___

辩证法所说的矛盾是指___

矛盾的基本属性是___

依据是___

矛盾问题的精髓是___

题的方法都是___

“任何个别（无论怎样）都是一般”。这句话的正确含义是___

在唯物辩证法看来，水果同苹果、梨、香蕉、桔子等的关系是___

“是就是是，不是就是不是，除此之外都是鬼话。”这是一种___

真象和假象的区别在于___

有的哲学家说，在大风扬起的尘土中，每一粒尘土的运动状况都是纯粹必然的。这是种___

“或然率”是指___

Economically speaking, are we better off than we were ten years ago? Twenty years ago? In their thirst for evidence on this issue, commentators seized on the recent report by the Census Bureau, which found that average household income rose by 5.2% in 2015. Unfortunately, that conclusion puts too much weight on a useful, but flawed and incomplete, statistic. Among the more significant problems with the Census’s measure are that: 1) it excludes taxes, transfers, and compensation like employer-provided health insurance; and 2) it is based on surveys rather than data. Even if precisely measured, income data exclude important determinants of economic well-being, such as the hours of work needed to earn that income. While thinking about the question, we came across a recently published article by Charles Jones and Peter Klenow, which proposes an interesting new measure of economic welfare. While by no means perfect, it is considerably more comprehensive than average income, taking into account not only growth in consumption per person but also changes in working time, life expectancy, and inequality. Moreover, it can be used to assess economic performance both across countries and over time. The Jones-Klenow method can be illustrated by a cross-country example. Suppose we want to compare the economic welfare of citizens of the U.S. and France in 2005. In 2005, as the authors observe, real consumption per person in France was only 60% as high as the U.S., making it appear that Americans were economically much better off than the French on average. However, that comparison omits other relevant factors: leisure time, life expectancy, and economic inequality. The French take longer vacations and retire earlier, so typically work fewer hours; they enjoy a higher life expectancy, presumably reflecting advantages with respect to health care, diet, lifestyle, and the like; and income and consumption are somewhat more equally distributed there than in the U.S. Because of these differences, comparing France’s consumption with the U.S.’s overstates the gap in economic welfare. Similar calculations can be used to compare the U.S. and other countries. For example, this calculation puts economic welfare in the United Kingdom at 97% of U.S. levels, but estimates Mexican well-being at 22%. The Jones-Klenow measure can also assess an economy’s performance over time. According to this measure, as of the early-to-mid-2000s, the U.S. had the highest economic welfare of any large country. Since 2007, economic welfare in the U.S. has continued to improve. However, the pace of improvement has slowed markedly. Methodologically, the lesson from the Jones-Klenow research is that economic welfare is multi-dimensional. Their approach is flexible enough that in principle other important quality-of-life changes could be incorporated—for example, decreases in total emissions of pollutants and declines in crime rates. What does the author think of the 2015 report by the Census Bureau?___