试述经典型预激综合征的心电图表现。

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问题:

试述经典型预激综合征的心电图表现。

考点:中医临床三基(医技)心电图诊断学心电图诊断学题库
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关于体循环阻力(SVR),以下解释错误的是()。

A.SVR与血压成正比

B.感染性休克患者SVR下降

C.多巴胺受体阻滞药使SVR增高

D.心源性休克时SVR增高

E.SVR下降时心肌氧耗减少,但易发生心血管虚脱

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You wake up in the morning,the day is beautiful and the plans for the day are what you have been looking forward to for a long time.Then the telephone rings,you say hello, and the drama starts.The person on the other end has a depressing(令人沮丧的) tone in his voice as he starts to tell you how terrible his morning is and that there is nothing to look forward to.Yon are still in a wonderful mood? Impossible!

Communicating with negative people can wash out your happiness.It may not change what you think,but communicating long enough with them will make you feel depressed for a moment or a long time.

Life brings ups and downs,but some people are stuck in the wrong idea that life has no happiness to offer.They only feel glad when they make others feel bad.No wonder they can hardly win others’pity or respect.

When you communicate with positive people,your spirit stays happy and therefore more positive things are attracted.When the dagger(匕首)of a negative person is put in you, you feel the heavy feeling that all in all,brings you down.

Sometimes we have no choice but to communicate with negative people.This could be a co-worker,or relative.In this case,say what needs to be said as little as possible. Sometimes it feels good to let out-your anger back to a negative person,but all this does is to lower you to that same negative level and they won’t feel ashamed of themselves about that.

Negativity often affects happiness without even being realized.The negative words of another at the start of the day can cling to(附着)you throughout the rest of your day,which makes you feel bad and steals your happiness.Life is too short to feel negative.Stay positive and avoid negativity as much as possible.

小题1:The purpose of the first paragraph is to           .

A.make a comparison

B.offer an evidence

C.introduce a topic

D.describe a daily scene小题2:How can negative people have effect on us?

A.By influencing our emotion.

B.By telling US the nature of life.

C.By changing our way of thinking.

D.By comparing their attitude to life with ours.小题3:Some negative people base their happiness on              .

A.other people’s pity for them

B.making other people unhappy

C.building up a positive attitude

D.other people’s respect for t hem小题4:According to the passage, to reduce negative people’s influence on us,we are advised             .

A.to change negative people’s attitude to life

B.to show our dissatisfaction to negative people

C.to make negative people feel ashamed of themselves

D.to communicate with negative people as little as possible小题5:What can we learn about negativity?

A.Its effect can last.

B.Its effect can be completely avoided.

C.It hardly happens among family members.

D.Its effect is smaller than the effect created by a positive person.

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根据FIDIC施工合同条件,如果造成成本增加和工程延期,承包商可同时索赔成本、工期和合理利润的情况有( )。

A.战争、敌对行动

B.工程所在国的判乱、恐怖主义

C.超音速飞行的飞机所产生的压力波

D.由业主委托的设计单位所做的工程设计的错误

E.业主提前占用或使用合同规定以外的永久工程

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煮沸法从表达内切核酸酶A的大肠杆菌菌袜中小量制备质粒时不应省掉的步骤是()。

A.溶菌酶处理

B.EDTA处理

C.酚-氯仿抽提

D.RNA酶消化

E.蛋白酶K处理

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