产蛋家禽钙的需要量取决于哪些因素?

题型:问答题 简答题

问题:

产蛋家禽钙的需要量取决于哪些因素?

考点:生物学动物营养学动物营养学题库
题型:问答题 简答题

某三跨钢筋混凝土框架结构高层建筑,抗震等级为二级,边跨跨度为5.7m,框架梁截面b×h=250mm×600mm,柱截面为500mm×500mm,纵筋采用HRB400级、箍筋采用HPB300级钢筋(fyv=270N/mm2),用C30混凝土。重力荷载代表值作用下,按简支梁分析的边跨梁梁端截面剪力设计值VGb=130.4kN。在重力荷载和地震作用的基本组合下作用于边跨一层梁上的弯矩值为:

梁左端:Mmax=200kN·m,-Mmax=-440kN·m

梁右端:Mmax=175kN·m,-Mmax=-360kN·m

梁跨中:Mmax=180kN·m

边跨梁:V=230kN

该边跨梁的剪力设计值Vb(kN),与下列何项数值最为接近().

A.230

B.283

C.258

D.272

题型:问答题 简答题

阅读理解。

     I had a dream - a strange dream that has helped me to understand Eric much better.   

     In the dream, Eric looked angry and said,"Melissa, I have something to tell you."   

     I've lived with Eric for more than five years. He is the cutest thing I've ever seen. I buy him fish and

milk and lots of toy mice once a week. I even bought a small house for him, because he sometimes likes

to be left only by himself. I love him with all my heart, and give him all I love.   

     But what has gone wrong? In the dream Eric said angrily,"I don't like fish. I don't like milk. And toy mice?

Are you crazy? I'm not a cat. And I don't want to be a cat, either!" Then he ran back to his small house.   

      After the dream, I know better: dogs don't like fish or milk. And surely they do not like toy mice. Most

important of all, they will let you know when they are really angry!

1. What can we learn about Eric in the reading?

A. He likes cats.

B. He is Melissa's pet.

C. He is four years old.

D. He enjoys talking with Melissa.

2. Why was Eric angry in the dream?

A. He did not have many friends.

B. Melissa loved him the wrong way.

C. Melissa did not take him out for a long time.

D. There were too many mice in Melissa's house.

3. Why did Melissa buy a house for Eric?

A. Eric did not sleep well in her room.

B. Eric needed more space for his toys.

C. Eric was too big to share a bed with her.

D. Eric did not always like to be with others.

题型:问答题 简答题
There was a very special teacher who made a far­reaching difference in my life.
Fall,1959,the first day of class at Bethesda Chevy Chase High School was about to begin. “Who,”I asked a senior,“is Mrs. McNamara,my 10 th grade English teacher?”He just ____ and said something about my being in ____.Soon,I understood what he meant. Mrs. McNamara had a pattern of ____ that she repeated again and again. We would have a literature reading task for ____.The next day,when we came to class,there would be two or three topics on the blackboard ___ to the homework reading. We were ____ to write an in­class essay about one of the topics. The following day,she would ____ the corrected and graded essays and each person would be called ____ to stand in front of the class and to ____ his/her essay. The class were required to criticize (评论) that essay,____the grade of everyone in class would be reduced.
The first time that I ____ her read­write­criticize method,I had not ____ to do the homework and had written something without knowing what it meant.____ the extreme embarrassment I suffered,standing before my classmates,____myself. No one laughed at me;no one would be ____ enough,or foolish enough,to do that in Mrs.McNamara's class. The embarrassment came from ____ and along with it came a strong ____ not to let it happen again.
Mrs. McNamara kept all of our written work in files;it was easy to see the ____ in writing that had occurred. What was not so easy to see was the inner transformation that had taken place,at least for me. What Mrs. McNamara ____ me to do was to see myself as others see me and,having done that,I could improve myself. And I____.Thank you,Mrs. McNamara.
小题1:
A.noddedB.laughedC.apologizedD.shouted
小题2:
A.troubleB.sorrowC.dangerD.anger
小题3:
A.behaviourB.evaluationC.activityD.thought
小题4:
A.reviewB.performance
C.practiceD.homework
小题5:
A.addedB.relatedC.contributedD.compared
小题6:
A.expectedB.persuadedC.allowedD.advised
小题7:
A.collectB.returnC.sendD.receive
小题8:
A.on purposeB.at firstC.by chanceD.in turn
小题9:
A.talk throughB.hand overC.read outD.show off
小题10:
A.soB.andC.butD.or
小题11:
A.triedB.adoptedC.examinedD.experienced
小题12:
A.undertakenB.attemptedC.botheredD.hesitated
小题13:
A.RememberB.PredictC.BearD.Imagine
小题14:
A.playing jokes onB.making a fool of
C.setting a trap forD.taking advantage of
小题15:
A.braveB.carelessC.proudD.selfish
小题16:
A.aboveB.withinC.behindD.below
小题17:
A.tendencyB.preference
C.determinationD.sense
小题18:
A.improvementsB.pains
C.difficultiesD.advantages
小题19:
A.trustedB.invitedC.forcedD.permitted
小题20:
A.didB.couldC.hadD.would
题型:问答题 简答题

下列概念中不正确的是

A.医院感染发病率是指一定时间内住院患者中发生医院感染新发病例的频率

B.医院感染暴发是指在某医院、某科室的住院患者中短时间内、突然发生许多医院感染病例的现象

C.医院感染浒是指某医院、某科室医院感染发病率显著超过历年散发发病率水平

D.医院感染散发是指医院感染在某医院或某地区住院患者中历年的一股发病率水平

E.医院感染的流行趋势是指医院感染持续流行

题型:问答题 简答题

社区卫生服务实践了生物、心理、社会医学模式对卫生服务的影响,表现为五个扩大。其中之一为()

A.从生物服务扩大到生理服务

B.从院内服务扩大到院外服务

C.从技术服务扩大到心理服务

D.从预防服务扩大到治疗服务

E.从专科医院服务扩大到综合服务

更多题库