低速离心机是指转数()。 A.在6000rpm以下 B.在10000rpm以上 C.

题型:单项选择题 A1/A2型题

问题:

低速离心机是指转数()。

A.在6000rpm以下

B.在10000rpm以上

C.在25000rpm以上

D.在400rpm以下

E.在60000rpm以上

考点:临床医学检验技术(士)临床化学检验临床化学检验题库
题型:单项选择题 A1/A2型题

研究者自身的个性特征的差异,是形成学术论著个性和风格的(),它对学术论著个性色彩的形成,起着决定性的制约作用。

题型:单项选择题 A1/A2型题

向一定量的铁粉中逐滴加入稀硫酸至过量,下图是反应过程中某种物质的质量Y随加入稀硫酸的质量变化的关系,则Y不可能表示(  )

A.消耗铁粉的质量

B.生成硫酸亚铁的质量

C.溶液的总质量

D.生成氢气的质量

题型:单项选择题 A1/A2型题

事件树分析法是按照事故发展的()顺序分析的方法。

A.空间

B.时间

C.地点

D.逻辑

题型:单项选择题 A1/A2型题
My father was raised in a fatherless home at a time when the family of five struggled to survive, which caused my father to be extremely tightfisted(吝啬) with money.
When we children became    16  that other children got pocket money from their parents, we made a(n)   17  to ask our father from some. Immediately his face turned stone-cold, and he said, “If you’re old enough to ask, you’re old enough to    18 .” And we had to seek odd jobs about the neighborhood.
He didn’t    19  his attitude as we grew into adulthood. There was a time when    20  of us had a car, so we had to ride a    21  whenever we came home. Though the bus stopped about two miles from home, Dad never met us, 22  in bad weather. If someone    23  (and my brothers did a lot), he’d say in his    24  father-voice. “That’s what your legs are    25  !
One spring morning I was on the bus home from    26 . Tests and long hours in labs had    27  me exhausted. As other students were    28  at their stops. I looked silently out of the window. Finally, the bus came to a    29  at my destination, and I    30 , carrying my suitcase to begin the long journey home.
The row of privet hedge(树篱) came into    31 , which lined the driveway that climbed the hill to our house. I stopped to put a book in the suitcase. When I stood up, I saw something gray    32  along the top of the hedge toward the house.
It was the top of my father’s head. I    33  then, each time I came home, he would stand behind the hedge, watching,    34  he knew I had arrived safely. I held back my tears. He did care,   35 .
Upon reaching home, I found my father innocently in his chair. “So! It’s you!” he said, his face lengthening into surprise.
小题1:
A.aware B.certain C.surprised D.excited
小题2:
A.attempt B.suggestionC.troubleD.plan
小题3:
A.spendB.earnC.surviveD.raise
小题4:
A.strengthenB.softenC.takeD.show
小题5:
A.neither B.eachC.allD.none
小题6:
A.bicycleB.car C.train D.bus
小题7:
A.especiallyB.onlyC.evenD.once
小题8:
A.refusedB.complainedC.criedD.intended
小题9:
A.strangestB.lowestC.softestD.scariest
小题10:
A.onB.inC.byD.for
小题11:
A.workB.homeC.townD.college
小题12:
A.ledB.madeC.foundD.proved
小题13:
A.treatedB.receivedC.metD.greeted
小题14:
A.stopB.houseC.streetD.corner
小题15:
A.stepped offB.went offC.jumped onD.climbed on
小题16:
A.mindB.viewC.flowerD.leaf
小题17:
A.shiningB.flyingC.failingD.moving
小题18:
A.understoodB.thoughtC.imaginedD.realized
小题19:
A.sinceB.afterC.until D.though
小题20:
A.after allB.above allC.in advanceD.in total
题型:单项选择题 A1/A2型题

X(n)=u(n)的偶对称部分为()。

A.1/2+δ(n)/2

B.1+δ(n)

C.2δ(n)

D.u(n)-δ(n)

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