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Several species of Verbal Contract were anciently in use, but the most important of all, and the only one treated of by our authorities, was effected by means of a stipulation, that is, a Question and Answer; a question addressed by the person who exacted the promise, and an answer given by the person who made it.

古代采用的"口头契约"有好几种，但其中最重要的、并为我们的权威学者讨论到的唯一的一种是用约定的方法来达成的，所谓约定，就是一"问"一"答"；即由要求允约的人提出问题，并由作出允约的人给予回答。

Experiments of flow conductivity closure stress of typical propping agent are done, propping agent short-term flow conductivity alteration index is defined, by this, the relation between fissure short-term flow conductivity and closure stress, it is close to exponential relation. 4. Establishing the mathematical simulator of hydraulic fractured well's production in a steady state, finding the relation curve between dimensionless flow conductivity and fracture penetration coefficient by means of calculation and analyses, it is the basis of hydraulic fracture. 5. Expatiating the importance of optimized hydraulic fracturing design in reservoir engineering, advancing the optimizing design method, fracture dimension can be calculated easily when the physical parameters are known. 6. Production rate decline standard curve of vertical fractured wells is achieved by mathematical simulation, when the flow pressure is certain , by asymptotic analyze, this decline curve is close to exponential relation.

完成了国内外典型支撑剂的导流能力闭合应力影响实验，在数据分析中定义了支撑剂短期导流能力变异系数，并由此发现裂缝短期导流能力随闭合应力变化的近似符合指数关系式； 4 建立了一种水力压裂井稳态产能的数学模拟器，计算分析找到了最优无量纲导流能力与裂缝穿透比之间的新型关系曲线，它是水力压裂优化设计的基础； 5 阐述了水力压裂油藏工程优化设计的重要性，提出了优化设计方法，在已知支撑剂物性参数条件下可简洁计算最优裂缝尺寸； 6 数学模拟给出了垂直裂缝井产量递减标准曲线，在井底定压条件下通过渐近分析表明，该递减曲线满足指数关系式。

The teaching contents and teaching purposes are determined by the cultural aims and professional qualities, the teaching media are befittingly chosen depended on teaching contents and student's characteristics, the keystones and difficulties of class teaching are broken through by selecting the cut-in points of applying modern educational technology, the shortages of facilities are supplied by applying modern educational technology to create the simulative situations, the level of applications are increasingly improved by means of receiving student's feedbacks, all of which are discussed so that expatiate how to apply modern educational technology to planting courses.

从根据培养目标和岗位能力确定教学内容，设计教学目标；根据教学内容和学生的特点选择适宜的教学媒体；找准应用现代教学媒体的切入点，突破课堂教学的重点、难点；运用现代教育技术创设实践教学情境补充设施条件的不足；及时掌握学生的反馈，不断提高应用水平等几个方面进行阐述，对种植类专业课教学中应用现代教育技术的策略做了一些探讨。

The modern corporation, as Berle and Means first mentioned in 1932, is characterized by separation of ownership and control.

Berle 和 Means（1932）首次提出，现代公司的特征是所有权和控制权分离，即股东和代理人之间的委托代理关系由此产生。

MethodsⅠMaximal electroshock seizure was adopted to analyse the relative of dose and effect, relative of time and effect, including maximal efficacy and potency of these five extractives in mice given by ig administration.ⅡMetrazol seizure test was used to compare seizure latency, anticonvulsant rate and mortality of mice with every extractives.ⅢPharmacodynamic parameters of five alcoholic extractives were assayed by means of Pharmacological Effective Method.ⅣUsing the model of seizure rats induced by penicillin localized injected in cortex,we studied the effect of extractives on seizure latency, frequency of epileptiform discharge, highest wave of hippocampus EEG(Recoded by RM6240C multichannel physiological signal collection and analysis recorde), the changes of convulsant behaviors and the latency of seizure.

方法①采用最大电休克惊厥模型，分析灌胃小鼠各药的量效和时效关系，比较其效价强度和效能；②采用戊四唑惊厥模型，比较ig小鼠各药的惊厥潜伏期、抗惊厥率和死亡率；③采用药效法，运用数学模式及参数来模拟各药在体内的药效动力学过程；④制备大鼠皮层定位注射青霉素点燃模型，采用RM6240C型多道生理信号采集处理系统记录脑电图，比较ig各药对痫性发作潜伏期及发作程度、痫性放电潜伏期、痫波发放频率及最高波幅的影响；⑤采用HPLC法测定海马区癫痫相关递质的含量，比较各药对Glu、Asp、Gly、GABA的影响。

In advance of reviewing probability for Senior Three students, the author gave an exam of probability. On the basis of analyzing the results, the author carried out a group of teaching strategies, the author reviewed the definition of Frequency by computer imitation trials and Equiprobability models by various Probability models, and distinguished Exclusive Events and Independent Events by examples, and described Variable Distribution by means of various Probability models.

在高三概率复习前夕，进行一次概率测试，在测试分析的基础上，采取有针对性的教学策略，利用计算机模拟试验复习频率定义；用各种模型进行古典定义的教学；运用实例辨析互斥事件与相互独立事件；借助各种概率模型描述随机变量分布列。

The producer that application LabIEW has carried on fictitiously the signal and fictitious oscilloscope design ,Moreoer deepen to comprehend the negatie feedback toto the action that the improement amplifier performance respect is taked by means of the test ,Research tension series negatie feedback along with the negatie feedback electric circuit performance index quiz means .

运用LabIEW进行了虚拟信号发生器和虚拟示波器的设计，并且通过实验加深理解负反馈对改善放大器性能方面所起的作用，研究电压串联负反馈以及负反馈电路性能指标的测试方法。

In another word, the status does not exist that a painter should learn from nature "purely" without any "prejudice" and paint realistically by facing an object to paint out what he or she has perceived. To obtain such capability, painting learners or students shall use their eyes (teachers ask students in the painting class "where are your eyes and your perceptions") to observe objects and things at the beginning of study and then paint the models faithfully by means of "facade-subdivision"(or "preferring to square not round" as described by Xu Beihong, or decomposing the object into many petty facades as described in the line drawing textbook by P.P. Chistjakov so as to turn around the object bit by bit).

也就是说，不存在这样一种状态，画家为了画出自己的感觉，他们应该"纯洁"地不带"偏见"地去向自然学习，去面对物体直截了当地写生，而为了获得这种能力，在学习绘画的初始阶段，就必须训练学生们用自己的眼睛(在绘画课室里，老师总是质问学生，你的眼睛在哪里，你的感觉在哪里)去观察对象，然后用一种"分面"的方法(也就是徐悲鸿所说的"宁方勿圆"，或者按照据说是契斯恰科夫的素描教程的要求把对象分解成许多小面，以便使物体能够一点一点地转过去的方法)把眼前的模特如实地画下来。

The liquid which expands in the heat sensor with the rise of temperature forces its way over the capillary tube in the actuator by means of removing a plunger piston, which is made tight externally be means of a flexible metallic tube, at which the pi- ston rod, which comes out of the actuator, moves the valve rod against a spring and a closing valve throttles or closes.

在热感应器中扩张的液体由于那在毛细管上的温度军队的上升它的方法在那主动器经由除去一个跳进的人活塞，这被做紧紧地外部地是有柔性的金属管方法哪里 pi-从主动器出来的 ston 竿移动活瓣竿相对于一个春天和一个结束活瓣节流阀或结束。

Therefore teachings ,This kind of technology in the sub－micron three oxidates wolfram is prepared to the means by means of the oxidate reduction ,Being living dominates the good temperature 、Hydrogen rate of flow and heat preservation time below the situation ,Is feasible completely ,Predictive effect can attain .

所以说，通过氧化还原的方法来制备亚微米三氧化钨的这种工艺，在控制好温度、氢气流量和保温时间的情况下，是完全可行的，能够达到预期效果。就以上一段话，我是小猫，5wmp不知够不够，可以商量，有点急~~~各位大人帮帮忙

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。