人的胃、肝脏、肾在结构层次上属于什么水平[ ] A.细胞 B.组织 C.器官 D

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问题:

人的胃、肝脏、肾在结构层次上属于什么水平[ ]

A.细胞    

B.组织    

C.器官    

D.系统

考点:动物的器官
题型:选择题

Li Lei gets an e-mail   1 Jackson Wilson. Jack is a student in Canada. He wants to  2  Chinese.
Dear friend,
My name is Jack Wilson. I am from Toronto,   3  . I am 13 years old. I’m a schoolboy. I know China is a great   4  . I want to make friends(交朋友)   5  China and I want to learn Chinese.
There are nineteen students in  6 class. My classmates are from six countries. They are learning English. My parents are from France. They   7 French . I speak English and French. There are many Chinese   8  in Toronto. I want to learn Chinese ,   9  I don’t have any Chinese textbooks. Could you   10  me?
Please write back soon. Thank you.    
Jack Wilson
小题1:
A.forB.toC.fromD.of
小题2:
A.teachB.learnC.speakD.know
小题3:
A.CanadaB.JapanC.AustraliaD.France
小题4:
A.cityB.countryC.peopleD.school
小题5:
A.onB.atC.inD.to
小题6:
A.hisB.yourC.myD.their
小题7:
A.speakB.tellC.sayD.talk
小题8:
A.thereB.hereC.peoplesD.students
小题9:
A.soB.andC.forD.but
小题10:
A.takeB.helpC.writeD.like
题型:选择题

棱长是1dm的正方体的表面积是(    ),体积是(    )。    

题型:选择题

试述截瘫患者的腋杖步行方法。

题型:选择题

()属于提速铁路货车“全面检全面修”的检查范围和质量标准。

A.工作风缸缸体及吊架无裂损、脱落

B.空重车自动调整装置限压阀无破损

C.空重车自动调整装置调整阀无破损

D.空重车调整杆及吊架无破损、脱落

题型:选择题

注水泵投用前需()。

A.检查润滑油液位是否正常

B.因无润滑油故无须检查润滑油

C.将出入口阀打开,返回阀打开

D.入口阀打开,出口阀关闭

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