单因素列表分析有时无法显示调查资料的(),这时可采用交叉列表分析。A、特征 B、结果C

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问题:

单因素列表分析有时无法显示调查资料的(),这时可采用交叉列表分析。

A、特征

B、结果

C、数据

D、百分比

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一块足够长的木板,放在光滑水平面上.在木板上自左向右放有序号是1、2、3……n的木块,所有木块的质量均为m,与木板间的动摩擦因数都相同.开始时,木板静止不动,第1、2、3……n号木块的初速度分别为v0、2v0、3v0……nv0,v0方向都向右,如下图所示,木板的质量与所有木块的总质量相等,最终所有小木块都与木板以相同的速度匀速运动.求在整个过程中木板运动的最大速度.

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若将241×(△+7)错看成241×△+7进行计算,得到的结果比正确答案少()。

A.1860

B.880

C.1680

D.1080

题型:单项选择题
We often talk about ourselves as if we have permanent genetic defects (缺陷) that can never be changed.“I’m impatient.” “I’m always behind.” “I always put things   21 !” You’ve surely heard them.Maybe you’ve used them to describe   22 
These comments may come from stories about us that have been   23  for years—often from   24  childhood.These stories may have no   25  in fact.But they can set low expectations for us.As a child, my mother said to me, “Marshall, you have no mechanical (操作机械的) skills, and you will never have any mechanical skills for the rest of your life.” How did these expectations   26  my development? I was never   27  to work on cars or be around   28 .When I was 18, I took the US Army’s Mechanical Aptitude Test.My scores were in the bottom for the entire nation!
Six years later,   29 , I was at California University, working on my doctor’s degree.One of my professors, Dr.Bob Tannbaum, asked me to write down things I did well and things I couldn’t do.On the positive side, I   30   down, “research, writing, analysis, and speaking.” On the   31  side, I wrote, “I have no mechanical skills.”
Bob asked me how I knew I had no mechanical skills.I explained my life   32  and told him about my   33  performance on the Army test.Bob then asked, “  34  is it that you can solve   35  mathematical problems, but you can’t solve simple mechanical problems?”
Suddenly I realized that I didn’t   36  from some sort of genetic defect.I was just living out expectations that I had chosen to   37 .At that point, it wasn’t just my family and friends who had been   38  my belief that I was mechanically hopeless.And it wasn’t just the Army test, either.I was the one who kept telling myself, “You can’t do this!” I realized that as long as I kept saying that, it was going to remain true.  39  , if we don’t treat ourselves as if we have incurable genetic defects, we can do well in almost   40  we choose.
小题1:
A.away B.offC.up D.down
小题2:
A.themB.myselfC.yourselfD.others
小题3:
A.saidB.spokenC.spreadD.repeated
小题4:
A.as long asB.as far back asC.as well asD.as much as
小题5:
A.basisB.plotC.causeD.meaning
小题6:
A.leadB.improveC.affectD.change
小题7:
A.encouragedB.demandedC.hopedD.agreed
小题8:
A.meansB.toolsC.facilitiesD.hammers
小题9:
A.thereforeB.somehowC.insteadD.however
小题10:
A.settledB.turnedC.tookD.got
小题11:
A.passiveB.activeC.negativeD.subjective
小题12:
A.experiencesB.tripsC.roadsD.paths
小题13:
A.unexpected B.poorC.excellentD.average
小题14:
A.WhenB.WhatC.How D.Why
小题15:
A.complexB.advancedC.common D.primary
小题16:
A.ariseB.separateC.sufferD.come
小题17:
A.believeB.suspectC.adoptD.receive
小题18:
A.weakeningB.strengtheningC.abandoningD.accepting
小题19:
A.As a resultB.At the same timeC.In additionD.On the contrary
小题20:
A.anything B.somethingC.nothingD.all
题型:单项选择题

在广泛使用条件下考察疗效和不良反应

A.I期临床试验
B.Ⅱ期临床试验
C.Ⅲ期临床试验
D.Ⅳ期临床试验
E.药品上市后监察

题型:单项选择题

双膜片式助力器和单膜片式类似,只是有几个膜片将外壳分成了个室()

A.4,4

B.2,4

C.4,2

D.2,2

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