焦炭的热值为3.0×107 J/kg,它的物理意义是______________

题型:填空题

问题:

焦炭的热值为3.0×107 J/kg,它的物理意义是________________,完全燃烧0.42kg的焦炭放出的热量是_________________ 。

考点:热值
题型:填空题

I am a Chinese boy. My name is Li Ming.I’m a student. In my class,some of the boys like playing football very much..Wu Jun and I are on school football team(校足球队).And some of them like playing basket.But the girls like playing tennis and volley. Han Mei and Zhang Hong are on school volleyball team(校排球队). Each of them has a tennis racket(球拍).

根据短文内容,从ABCD四个选项中选出能填入空白处的最佳选项。(共5小题,每小题2分,满分10分)

小题1:Li Ming is a ________boy.

A.Chinese

B.American

C.Candian

D.French小题2:Li Ming likes playing_______.

A.basketball

B.football

C.volleyball

D.tennis小题3:The girls like playing _________.

A.tennis and basketball

B.football and basketball

C.tennis and volleyball

D.volleyball and basketball小题4:____and Li Ming are on school football team.

A.Wu Jun

B.Han Mei

C.Zhang Hong

D.Some of the boys小题5: Each  of  the girls has a ________.

A.tennis racket

B.baseball bat

C.volleyball

D.baseball

题型:填空题

女性,心脏超声检查示:心底部仅见单一大血管,一组半月瓣,室间隔缺损位于干下部,肺动脉起自动脉总干,诊断考虑为()。

A.永存动脉干

B.右心室双出口

C.完全性大动脉转位

D.重度法洛四联症

E.以上都不是

题型:填空题

患者,女,32岁,与家人生气后口服敌敌畏 1h被送入院。昏迷,瞳孔针尖大,周身有汗,肌束震颤,呼吸困难。经医生全力抢救,患者脱险,好转后出院。回家后20d患者出现双下肢肌肉萎缩、瘫痪,再次来院就诊,初步诊断为

A.有机磷中毒迟发性多发性神经病

B.低钾血症

C.末梢神经炎

D.急性脊髓炎

E.中毒性脑炎后遗症

题型:填空题

处理量的减小及回流比的增加会引起降液管超负荷。

题型:填空题

ZPW-2000A轨道电路补偿电容不良对轨道电路有什么影响?

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