下列血管中流静脉血的是() A.肺静脉 B.肝动脉 C.胃动脉 D.肾静脉

题型:选择题

问题:

下列血管中流静脉血的是(   )

A.肺静脉

B.肝动脉

C.胃动脉

D.肾静脉

考点:血管的分类和功能血液的组成和功能
题型:选择题

短文改错

In my school six students punished for cheating in the mid-terms, but                                 1._____       

this didn't stop some students from doing the same thing. In one day's                                2._____      

exams, on my way to home I heard some students talking with each other. "I                     3._____       

was too worried that I sent a message to everyone I know to ask the answers                   4._____        

of the questions on the politics exam paper." It's clear that many students                           5._____       

cheated. This six unlucky students became the "killed chickens", but the                             6._____       

"monkeys" were not frightened at all. More and more student start cheating                       7._____      

in school exams. That must be how so many students do well in the exams                         8._____       

at their own school, and fail in the college entrance examinations. I do hope                       9._____          

that useful measures could be taken stop cheating in exams.                                             10._____

题型:选择题

0×1×2×3×4×5>0+1+2+3+4+5______(判断对错)

题型:选择题

如图所示,E=12V,R1=4Ω,R2=6Ω,C=30μF,电源的内阻r=2Ω,在开关K断开下在电路稳定时电容器上所带的电量为 ___________C,现将开关S闭合到电路稳定为至,将有   C的电量流过电阻R1

题型:选择题

按体积分数计算,氧气在空气中约占

A.78%

B.21%

C.0.94%

D.0.03%

题型:选择题

青年男性,2天来胸背部疼痛,今晨出现双下肢无力,伴二便障碍,查脐以下各种感觉障碍,双下肢肌力0级,无病理反射。

最可能的诊断是()。

A.脊髓出血

B.脊髓肿瘤

C.急性脊髓炎

D.吉兰巴雷综合征

E.大脑旁脑膜瘤

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