开关电源有哪几种分类方式？

阅读理解。

     An important key to being successful in school is to have a pleasant personality. Students will be much

more successful if they have a respectful attitude to their teachers and their peers.   1    

     Remember to have self-confidence when faced with subjects that you find difficult.   2   . Don't feel bad

and give up because you are slow in a single area. Try your best and if someone hurts your feelings by

commenting negatively about your efforts, don't feel bad,because everyone has experienced difficulty in

pleasing others. Remember that your goal is to pass your classes and attend a university.

     Be honest with your teacher about your desire to be successful. Tell him/her about your goals and

dreams.   3   Volunteer to stay after school if necessary to receive tutoring or to complete work.

     Remember to have a positive attitude even when faced with an obstacle. Every obstacle presents an

opportunity for success.   4   we have all experienced failures, but successful students are those who pick

themselves up and proceed even when with obstacles.   5   There is no doubt that you have many talents,

and you should not be discouraged id someone dose not appreciate one of your abilities. You may be musical,

artistic, creative, athletic, analytical, and / or friendly. Your school counselor (辅导员) might be able to

recommend tests to determine abilities, but you are ultimately the one who will build the talents through choice

and dedication (专心致志).

A. If you are struggling with a subject, be honest about the difficulty that you are experiencing.

B. Just as employers would much prefer to hire cooperative employees, teachers do appreciate students 

    who know how to behave and be respectful.

C. What students focus on nowadays is enjoying their lives freely.

D. If you try you best, do not get angry about a failure.

E. in a word, students vary from person to person.

F. Most students tend to be strong in some areas and weak in others.

G. Try to discover where your talents are.

低值易耗品的管理，从哪些方面稽核（）。

A.检查是否加强低值易耗品的日常管理，建立低值易耗品管理台账，详细登记：物品名称、数量、价格、购买日期、领用数量、用途及领用人签名等，是否真实、全面、及时地记录低值易耗品的增减变化情况

B.查阅低值易耗品账、卡、簿，核对低值易耗品库存，账实是否相符

C.是否确定专人管理，人员调离后是否进行移交；核销时是否手续齐全

D.购臵、领用、报废是否有相应的审批手续和领用登记制度；是否定期不定期进行盘点、清查，对盘盈、盘亏、报废、毁损的低值易耗品，是否查明原因，明确责任，属人为损坏、丢失的，是否由责任人按规定赔偿

包价旅游合同应当包括什么内容？

下列哪项与阿司匹林的特点不符（）

A.易溶碳酸钠溶液

B.加热后与三氯化铁反应显紫堇色

C.遇湿可缓慢水解

D.仅有解热镇痛作用

E.水解产物是水杨酸和醋酸