常用的超细粉碎设备有哪些?

题型:问答题 简答题

问题:

常用的超细粉碎设备有哪些?

考点:生物工程设备生物工程设备题库
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动物运动会中,小鹿在小狗前面70米,小熊在小兔后面40米,而小兔在小狗前面30米,写出动物的名次,第一名和最后一名之间相距多少米?

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女,32岁,一个月前感冒后发咳嗽,服药无明显好转,现干咳,咽燥,咯血,潮热,盗汗,面色溯红,舌红少津,脉细数,其辨证为()。

A.肺气虚

B.肺阴虚

C.气阴两虚

D.心阴虚

E.肾阴虚

题型:问答题 简答题

对于非零的实数a、b,规定a⊕b=1/b-1/a.若2⊕(2x-1)=1,则x=(  )

A.5/6

B.5/4

C.3/2

D.-1/6

题型:问答题 简答题
Teary Joe was a boy with a special ability: he could cry in less than a second.If he  36 something or things became difficult, Joe would  37 a pitiful face.In this way he got everything he wanted,  38     no one could resist(抗拒) his sad face.
But one day, Joe met Pipo.Pipo was begging in the street for some  39 .Pipo was very poor, but he always had the biggest_ 40 on his face.
Joe decided to help Pipo make some money.He went over to Pipo, took off his hat, and started crying with the most pitiful_  41 
In a few minutes, Joe's hat was full of coins, but when Joe offered all these to Pipo, Pipo  42      him down.
"I prefer  43 what I receive," answered Pipo with his usual smile."It's much more fun making a(n)44 to get things.Today I've washed a dog,  45 a blind old lady to the park and helped a stranger to mind his bag.Maybe I haven't gotten what I've wanted, but I've done many  46 things."
Joe walked  47 away.He had gotten everything he wanted, but he'd done  48  nothing of interest.He hadn't even  49  himself spending almost all his time crying.
That evening, Joe_  50 a delicious cake for his supper.When his mother  51 , Joe tried to cry, but_ 52 how joyful Pipo was, Joe couldn't do it.Instead, he had an idea.He tried to get the cake in another way. Joe spent the whole evening helping his mother water the Plants and   53 the rooms.
In the end there was no  54 .But that wasn't so bad, because Joe  55 it had been much more fun doing all those than just crying to get a piece of cake.
小题1:
A.damagedB.ignoredC.boughtD.disliked
小题2:
A.put onB.put upC.put downD.put off
小题3:
A.thoughB.untilC.becauseD.unless
小题4:
A.foodB.moneyC.presentsD.suggestions
小题5:
A.smileB.doubtC.pityD.dream
小题6:
A.exhibitions B.agreementsC.resourcesD.expressions
小题7:
A.setB.turnedC.calmedD.settled
小题8:
A.inspectingB.consultingC.deservingD.asking
小题9:
A.effortB.promiseC.excuseD.difference
小题10:
A.accompaniedB.accompanyingC.companiedD.companying
小题11:
A.useless B.difficultC.hopefulD.meaningful
小题12:
A.lightlyB.sadlyC.carefullyD.cheerfully
小题13:
A.secretlyB.hardlyC.reallyD.eagerly
小题14:
A.enjoyedB.missedC.noticedD.caught
小题15:
A.cookedB.preparedC.showedD.wanted
小题16:
A.admittedB.allowedC.refusedD.decided
小题17:
A.understandingB.suggestingC.commentingD.remembering
小题18:
A.visitB.cleanC.checkD.leave
小题19:
A.cakeB.chanceC.luckD.choice
小题20:
A.regrettedB.arguedC.discoveredD.suggested
题型:问答题 简答题

从精密度高就可判断分析结果准确度的前提是( )。

A.偶然误差小

B.系统误差小

C.操作误差不存在

D.相对偏差小

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