在水压试验的升压过程中,如发现压力上升非常缓慢或升不上去,应从哪几个方面查找原因?

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问题:

在水压试验的升压过程中,如发现压力上升非常缓慢或升不上去,应从哪几个方面查找原因?

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既能止血止痢又能杀虫补虚的药物是()

A.降香

B.蒲黄

C.侧柏叶

D.仙鹤草

E.三七

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如图所示,足够长的光滑导轨ab、cd固定在竖直平面内,导轨间距为l,b、c两点间接一阻值为R的电阻。ef是一水平放置的导体杆,其质量为m、有效电阻值为R,杆与ab、cd保持良好接触。整个装置放在磁感应强度大小为B的匀强磁场中,磁场方向与导轨平面垂直。现用一竖直向上的力拉导体杆,使导体杆从静止开始做加速度为的匀加速运动,g为重力加速度,不计导轨电阻及感应电流间的相互作用。求:

(1)导体杆上升h高度的过程中通过电阻R的电量;

(2)设导体杆从t0=0时刻由静止开始运动,试推导出导体杆所受拉力随时间变化的关系式。

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Our English course for kids or children focuses on learning English in an enjoyable way. Classes are small and individual attention is very important.

During the rest of the day students are encouraged to make use of the opportunities to speak and improve their English with the presence of monitors and teachers who will always use English with them.

There are three classes in the morning from Monday to Friday. The focus is primarily on spoken English; students will learn functional English to help them in real social situations. Special attention will be given to useful vocabulary for the afternoon’s activities or trip. The course will finish with a group presentation.

Maximum number of students in class is 8. This allows for greater participation and a greater degree of individual attention. Please note that this is a guaranteed maximum.

Each class is with a different teacher. This means that students practice English with the

added benefit of listening to more accents and experience a variety of teaching styles.

Classes are arranged by level. On arrival students take a level test to assess their oral, reading and written abilities. Students are then placed in a class where teachers agree they will benefit most.

We live and study on campus. There is no time wasted in traveling to class. There are short breaks between classes to allow students to refresh, prepare for the next class or make a start on homework. Homework is beneficial to reinforcing language learned during the day so teachers will set some short tasks each night. Students will have opportunity to do these when they choose--after class, before or after meals or at the end of the day.

Teachers are native-English speakers from all over the world, graduates, TESOL qualified, and experienced. Our teachers know what ifs like to learn a language. They will encourage and help all the students一from children to teenagers.

小题1:In the morning lessons, students will_____.

A.make sure of the opportunity to make a personal presentation

B.learn spoken English for the afternoon activities

C.practise speaking English with teachers individually

D.get into real social situations to practise functional English小题2:According to the passage, each class is with a different teacher in that_____.

A.students themselves have their own favourite teachers

B.students can make friends with different teachers

C.students can learn English spoken with different accents

D.different teachers teach students different courses小题3:What information can you get from the passage?

A.There is no need for students to do any homework there.

B.All the teachers are native and full of experience.

C.Students don’t have lunch together with their teachers.

D.Not more than eight students are allowed to learn in a class.

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关于女性内生殖器官描叙哪项是对的

A.非孕期子宫容积10cc

B.子宫腔呈梭形

C.输卵管正常约16-18厘米

D.卵巢为性腺器官

E.子宫腔表面内膜称为基底层

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下列各组软件中,完全属于应用软件的一组是______。

A.WPS Office 2003、UNIX、Windows XP
B.Photoshop、AutoCAD、Word XP
C.Oracle、FORTRAN编译系统、系统诊断程序
D.物流管理程序、Sybase、MS-DOS

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