分光光度法测定样品时,比色皿表面不清洁是造成测量误差的常见原因之一,每当测定有色溶液

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问题:

分光光度法测定样品时,比色皿表面不清洁是造成测量误差的常见原因之一,每当测定有色溶液后,一定要充分洗涤。可用()涮洗,或用()浸泡。注意浸泡时间不宜过长,以防比色皿脱胶损坏。

考点:环境监测上岗考试分光光度法分光光度法题库
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试述普通型菌痢的诊断依据。

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某岩石的实测单轴饱和抗压强度Rc=55MPa,完整性指数Kv=0.8,野外鉴别为厚层状结构,结构面结合良好,锤击清脆有轻微回弹。按工程岩体分级标准确定该岩石的基本质量等级为()

A.Ⅰ级

B.Ⅱ级

C.Ⅲ级

D.Ⅳ级

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The world is filled with smart, talented, educated and gifted people.We meet them every day A few days ago, my car was not running well.I pulled it in to a garage and the young mechanic had it fixed in just a few minutes.He knew what was wrong by simply listening to the engine.I was amazed.The sad truth is that great talent is not enough.

 I am constantly shocked at how little talented people earn. I heard the other day that less than 5 percent of Americans earn more than $100,000 a year. A business consultant who specializes in1 the medical trade was telling me how many doctors and dentists struggle financially. It was this business consultant who gave me the phrase, “They are one skill away from great wealth.”

There is an old saying that goes, "Job means 'just over broke(破产)’".And unfortunately, I would say that the saying applies to millions of people.Because schools do not think financial intelligence is intelligence, most workers "live within their means".They work and they pay the bills.Instead I recommend to young people to seek work for what they will learn, more than what they will earn.

When I ask the classes I teach, “How many of you can cook a better hamburger than McDonald's?” almost all the students raise their hands. I then ask, “So if most of you can cook a better hamburger, how come McDonald's makes more money than you?” The answer is obvious: McDonald's is excellent at business systems. The world is filled with talented poor people. They focus on perfecting their skills at building a better hamburger rather than the skills of selling and delivering the hamburger.

小题1:The author mentions the mechanic in the first paragraph to show that      

A.he is just one of the talented people

B.he is ready to help others

C.he has a sharp sense of hearing

D.he knows little about car repairing小题2:The underlined part in the third paragraph can be best replaced by____   

A.spend more than they can afford

B.do in their own way

C.1ive in their own circle

D.1ive within what they earn小题3:Why do talented people earn so little according to the author?

A.They don’t work hard enough

B.They lack financial intelligence.

C.They don't make full use of their talents

D.They have no specialized skills.小题4:The main purpose of the author is to tell us____      

A.how young people can find a satisfactory job

B.What schools should teach about finance

C.why so many talented people are poor

D.how McDonald's makes much money

题型:填空题

腹平片上区别大小肠最可靠的特征是()

A.结肠袋影

B.环形皱襞影

C.肠襻数目

D.肠襻分布

E.粪便块影

题型:填空题

病理科有义务要求临床医生在送检标本时做到()

A.申请单内容的真实性和一致性

B.为了保护患者的隐私电话告诉病理医师病情,而不必写在申请单上

C.为了安慰患者可以不在申请单上写癌或恶性肿瘤

D.为了照顾贫困的患者,可以使用别人的医保卡

E.为了科研留取部分标本

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