主动脉瓣狭窄时,心脏最主要的代偿机制是A.心率加快B.左心室肥厚C.回心血量增加D.

题型:单项选择题

问题:

主动脉瓣狭窄时,心脏最主要的代偿机制是

A.心率加快
B.左心室肥厚
C.回心血量增加
D.左心室扩张
E.交感神经兴奋

考点:专升本考试医学综合专升本医学综合
题型:单项选择题

计算机网络是计算机通信应用领域的典型代表。()

题型:单项选择题

完成屈肘动作的正确顺序是:①骨骼肌收缩   ②骨受到肌肉牵拉绕着关节产生动作   ③骨骼肌接受神经传来的兴奋(  )

A.③①②

B.②③①

C.①③②

D.②①③

题型:单项选择题

It is not a good idea to stop the actor Richard Griffiths in the middle of a play.During the past year he has stopped performances many times at the National Theatre when mobile phones rang, and he threw out one member of the audience because she failed to turn off her phone.

So when a mobile rang out for the third time during his performance in Alan Bennett’s The History Boys, he spoke angrily to the theatergoer (爱看戏的人), “I am not going to compete with these electronic devices (装置).”

Griffiths’ actions led to a debate in the UK theatre world over whether phones should be forbidden by law from British theatres, too.Actors have already asked the government to legalise (使合法化) the use of an electronic device that stops mobile phone signals in theatres.

Technology companies have “stopping” devices that send out a high-powered signal on the same frequency (频率) as a mobile phone, stopping the mobile phone signal.

However, these are forbidden in many countries because they might stop emergency calls from being made.

Rosemary Squire, president of the Society of West End Theatre, said, “Phones are one of the biggest problems theatres face.We should look at equipment that could stop phones or make a London-wide theatre rule.”

Nick Allott, the managing director of Sir Cameron Mackintosh’s theatre group, said, “We would all welcome some ways of stopping ringing phones but doctors and emergency workers need to be connected in a theatre and we mustn’t stop that.” What can we do to solve the problem?

小题1:What can we infer from the second paragraph?

A.Surely Griffiths did better than mobile phones in the theatre.

B.Griffiths didn’t want mobile phones to affect his performance.

C.Griffiths was jealous that mobile phones attracted the audience’s attention.

D.Griffiths taught theatergoers a lesson in the performance as a teacher.小题2:According to the passage, “stopping” devices ______.

A.have the same functions as mobile phones

B.cause the biggest problem theatres have to face

C.prevent the mobile phones signals from being received

D.help doctors or emergency workers receive emergency calls小题3:According to Nick Allott, ______.

A.“stopping” devices can make the sound of mobile phones disappear

B.no one except doctors and emergency workers should have mobile phones

C.phones are one of the biggest problems theatres face

D.stopping phones in theatres has some side effects小题4:What will probably be talked about following the last paragraph?

A.Griffiths’ next performance in theatres.

B.The opinions the public has about the problem.

C.The ways to solve the cellphone problem in public places.

D.The side effects mobile phones have on people.

题型:单项选择题

在先天性心脏病中发生率最高的是

A.ASD
B.PDA
C.TOF
D.VSD
E.PS

题型:单项选择题

营业厅应建立安全管理制度,按照自身条件配置并完善安全防范设施,明确安全职责,确保()安全。

A.人员

B.资金

C.信息

D.设备

更多题库