不能选择

Firstly, the history of ejectors development was introduced, and the formula of ejectors working performance was given and the calculated result was analyzed.

固定结构喷射器的设计是选择在一个给定的工作状态下完成，一经制成就不能改变，喷射器只有在设计状态下工作才能达到最大的效率。

Studies on the effect of eluting time,temperature and ultrasonic on elution rate are carried out and X-ray fluorescence are used in analysis.

针对硫酸溶液可以有效洗脱树脂上的氰化物和锌，但不能洗脱铜的工艺问题，选择氨水溶液对酸洗后201×7树脂上的铜进行解吸；试验研究了解吸过程的时间、温度以及超声波作用等条件对解吸率的影响，并进行了X射线荧光分析。

The German Post Office refuses to print special private stamps, because a stamp is the cultural embassador of a country and these stamps would not be up to their high standards.

由于邮票是一个国家的文化使节并且这些邮票往往不能达到高标准，所以德国邮政拒绝印刷这类特制的个性化邮票，因此我们只有一个选择，那就是不得不在奥地利去订货。

If baby food formula, should be chosen with a small protein, such as the breast, the mother can not eat fish, eggs (will be particularly serious eating), eating soy products, dairy products and peanut seeds, spicy food, baby face, or Eczema bath when the water will be encountered in the obvious places, but one would be better cool.

如宝宝吃的奶粉，应选择含蛋白少的，如吃母乳的，母亲不能吃鱼虾，鸡蛋，少吃豆制品，奶制品以及花生瓜子，辛辣食物，宝宝洗脸或洗澡的时候湿疹的地方遇到水就会明显，不过凉快一会就会好些。

The researchmethodology system is as follows:The variables that can be measured and have significance to stock relative intrinsic value are industry characteristic, profitability,development potential,qulity of earing and asset, the expandable potential of capital stock,the ability to pay off the debt,asset manging ability and the scale of the capital stock;(2)When the MFPM is established, the original variables should be disposed beforehand;(3)As for the research objects.we should value synthesizationly the achievement of the listed,and take the No.

本章所建立的研究方法体系为：（1）上市公司个股基本面因素中可以量化，并且对股票相对内在价值有重要影响的主要有行业特性、盈利能力、成长性、盈利质量及资产质量、股本扩张潜力、偿债能力、资产运营效率和股本规模大小等方面；（2）在建立MFPM模型时，原始指标值是不能直接用于模型计算的，必须对数据进行预处理后才能用于模型中：（3）在确定研究对象时，需要对上市公司经营绩效进行综合评价，在剔除主要靠未来业绩预期定价的第Ⅳ类股后，把第Ⅰ、Ⅱ和Ⅲ殴作为模型研究对象；（4）在选择多元回归模型时，由于原始自变量由于存在错综复杂的关系，尽管对原始自变量进行过预处理，但自变量指标依然会存在一定的多重共线性，为此在建立MFPM模型时，须采用逐步回归模型；（5）在检验MFPM模型有效性时，须从统计意义和投资实战意义两个方面进行。

As has been said that the disability of the CMS is ascribed to the imperfect management, and under the framework of supervisor game theory the factors that cause imperfect management lie in can be concluded as the following three points: the lack of the supervisor, the moral risk and the collusion of the medicals and the patients.

合作医疗不能吸引到足够多的农民参加是由于农民预期其参加合作医疗的收益小于成本，而造成这种预期的主要原因是&逆选择&、社会资本不足等问题的存在。

To choose a low-stress job or career, it's important to consider what you can and can't abide, according to Andrea Moselle, senior manager of work/life at AstraZeneca Pharmaceuticals."Any job can be stressful or not, depending on how you view it."

要选择一份低压的工作或事业，重要的是要考虑好什么是你能够忍受的以及什么是你不能容忍的，根据AstraZeneca Pharmaceuticals公司的高级经理Andrea Moselle所说：&一份工作有没有压力，关键是看你怎么去看待它。&

For where a man cannot choose, or vary in particulars, there it is good to take the safest and wariest way in general

因为一个人在不能随机应变有所选择的时候，自以取那一般地最安全最谨慎的途径为佳

If everything is given, we can't choose sightlines for ourselves.

如果每件东西都被给予，我们不能从自身选择视线。

It brings up the question, What is the source of Continuous Competitive Advantage in new situation, and how to construct Continuous Competitive AdvantageCase analysis part adopts the analysis method, which combines the determination of nature and quantity. Firstly, it analyses economic character, competition situation, future and attraction of mobile communication industry in Huazhou at present. Secondly, it analyses the importance of resource, competition ability and customer orientation with SWOT Method and Value Chain Method. Thirdly, with Continuous Competitive Advantage Theory and Creative Destruction Theory, it illustrates that defense cannot protect the original competitive advantage in the severity competition situation, and that the only source for Continuous Competitive Advantage is continuous creation and method of pursuing a scries of temporary dynamic advantage. This is the strategy choice of AAA. Finally, with Leak Analysis Method, Core Competence Analysis and thoughts of Dynamic Strategic Management, it educes the strategic implementation scheme and brings forward the strategic plan.

首先，分析了当时华州移动通信行业的经济特性、竞争态势、前景及吸引力；接着，运用SWOT、价值链等分析法分析了AAA的资源、竞争能力及客户导向的重要性；然后，运用持续竞争优势和创造性破坏理论，阐明在激烈竞争的新形势下，防御已不能保护原有的竞争优势，只有通过不断地创新，追求获得一系列暂时的动态优势的方法，才是构筑持续竞争优势的源泉，从而形成AAA的战略选择；最后，运用漏洞分析法和核心竞争力分析等，结合动态战略管理的理念，导出AAA的战略实施方案，提出了战略计划。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。