在滴定分析中,若怀疑试剂已失效,可通过()方法进行验证。A.仪器校正; B.对照分析

题型:单项选择题

问题:

在滴定分析中,若怀疑试剂已失效,可通过()方法进行验证。

A.仪器校正;

B.对照分析;

C.空白实验;

D.多次测定。

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题型:单项选择题

粗、中、细砂又分成几个级配区,其中,()砂级配较粗,保水能力较差,宜于配制富混凝土和低流动混凝土。

A、Ⅰ区

B、Ⅱ区

C、Ⅲ区

D、Ⅳ区

题型:单项选择题
My friend Michelle is blind, but you’d never know it. She makes such good use of her other   36 , including her "sixth sense", that she rarely gives the impression she’s   37  anything.
Michelle looks after her children pretty much like the rest of us,   38  that she doesn’t push too hard on them,   39  really benefit a lot from her relaxed attitude. She knows when to clean the house, she moves around so fast that often   40  don’t realize she’s blind.
I   41  this the first time after my six-year-old daughter, Kayla, went to play there. When Kayla came home, she was very   42  about her day. She told me they had baked cookies, played games and done art projects. But she was  43  excited about her finger-painting project."Mom, guess what?" said Kayla, all smiles. "I learned how to   44  colors today! Blue and red make purple, and yellow and blue make green! And Michelle  45  with us.
To my great   46  , my child had learnt about color from a blind friend! Then Kayla continued, "Michelle told me my  47  showed joy, pride and a sense of accomplishment. She really  48  what I was doing!" Kayla said she had never felt how good finger paints felt   49  Michelle showed her how to paint without looking at her paper.
I realized Kayla didn’t know that Michelle was blind. It had just never   50  in conversation. When I told her, she was  51  for a moment. At first, she didn’t believe me. "But Mommy, Michelle knew exactly what was in my picture!" Kayla   52 . And I knew my child was  53  because Michelle had listened to Kayla describe her artwork. Michelle had also heard Kayla’s   54 in her work.
We were silent for a minute. Then Kayla said slowly, "You know, Mommy, Michelle really did ‘see’ my picture. She just used my  55 ." Indeed, she uses a special type of “vision” that all mothers have.
小题1:
A.waysB.meansC.methodsD.senses
小题2:
A.enjoyed B.foundC.missedD.lost
小题3:
A.and B.exceptC.evenD.but
小题4:
A.whoB.itC.sheD.which
小题5:
A.childrenB.familyC.guestsD.friends
小题6:
A.realizedB.heardC.recognizedD.witnessed
小题7:
A.sadB.satisfiedC.excitedD.enjoyed
小题8:
A.especiallyB.not soC.a littleD.not at all
小题9:
A.paintB.drawC.createD.mix
小题10:
A.stayedB.paintedC.talkedD.played
小题11:
A.excitementB.encouragementC.delightD.surprise
小题12:
A.attitudeB.colorC.pictureD.paper
小题13:
A.touched B.distinguishedC.saw D.understood
小题14:
A.afterB.beforeC.untilD.when
小题15:
A.come upB.turned out C.referred toD.talked about
小题16:
A.curious B.quiet C.puzzledD.worried
小题17:
A.criedB.insisted C.complainedD.informed
小题18:
A.right B.wrong C.worriedD.uncertain
小题19:
A.shortcomingsB.difficultiesC.pride D.description
小题20:
A.paperB.pensC.handsD.eyes
题型:单项选择题

对接接头的坡口形式可分为()。

A、不开坡口

B、V形坡口、X形坡口

C、单U形坡口和双U形坡口

D、以上都对

题型:单项选择题

图灵机由3部分组成:一条双向都可无限延长的被分为一个个方格的纸带、()和一个读写头。

A.一个读写控制器

B.一个无限状态寄存器

C.一个控制器

D.一个有限状态控制器

题型:单项选择题

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