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Homework done is the reliable way to improve the achievement of the test,it is also in the classroom's test.

做家庭作业是提高考试成绩的可靠方法，在课堂测试中更是这样。

We have used GC to follow up the formation of epoxy acid and established the acidify condition; we have done series of parallel experiments to better the pivotal condensation reaction between acid and amine; In the cyclization step, we use cheap and available reagent-Lithium amide , rather than expensive LiHMDS, to proceed the reaction; and at last, we introduced green reagent-ozone to clear the phenyl group of nitrogen to avoid using heavy metal reagent-CAN. The total yield for this method is 29.8%.

通过GC监测，确定环氧酸的最佳酸化条件；对关键的酸和胺的缩合步骤，平行试验了多种条件；在环合一步，用价廉易得的氨基锂及催化量的HMDS代替昂贵的LiHMDS进行反应；氮上苯基的脱除采用臭氧，避免了重金属试剂-硝酸铈铵的使用，总收率为29.8％。

Then,the test about their physiological and physiochemical characteristics and a acidophilous milk fermentation test were done for the 6 lactic acid bacterium strains.

对这6株乳酸菌进行生理生化鉴定和酸奶发酵实验。

We acknowledge you very much for everything you have done in this years.

4： 我们非常感谢这些年你为我们所做的一切。

For the active acoustic fuze for a torpedo on the basis of the distance measurement done by using acoustic pulses, the echo of a randomly undulating wave is a main disturbance to recognize a surface ship.

摘 要：基于脉冲回声探测的主动声引信识别水面舰船，随机起伏的波浪回声干扰是限制其可识别水面舰船最小吃水的主要因素。

Acceptance or approval of what is planned or done by another; acquiescence .

赞同对另一个人所计划或做的事情表示接受或赞许；同意

Own an acquisitive mind ,have the faith in doing the things well the same as others done.

有很强的上进心，自己始终相信别人能做好的事情我一定也能行。

The object of this sport is to see what acrobatics can be done in the air and on the ground.

这项运动的目的是为了展示怎样在空中和地面上完成各种特技。

I only use acrylic paints and have done up to 25 and 30 pumpkins during a season.

我只能用丙烯酸油漆和做高达25和30日在南瓜一个赛季。

If I act something out, I invent things that I wouldn't have done drawing.

如果我表演某样东西，我想出我是不会做的。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。