为达到治疗时兴奋A类纤维,激活粗纤维,TENS治疗仪所设计的脉冲波宽为() A.0.

题型:单项选择题

问题:

为达到治疗时兴奋A类纤维,激活粗纤维,TENS治疗仪所设计的脉冲波宽为()

A.0.04~0.3ms

B.0.3~0.4ms

C.0.4~0.45ms

D.0.45~0.5ms

E.0.01~0.04ms

考点:上海住院医师康复医学科康复科康复科题库
题型:单项选择题

阅读理解。

     1970 was World Conservation (保护) Year. The United Nations wanted everyone to know that the world

was in danger. They hoped something could be done.

     Here is one example of the problem. At one time there were 1300 plants and flowers in Holland, but now

only 866 are left. The others have been destroyed (毁坏) by modern man and his science. We are changing

the earth, the air and the water and everything around us. We can't live without these things. If things go on

like this, we shall destroy ourselves.

     What will happen in the future? Perhaps it is more important to ask "What must we do?" More and more

young people have known this. Many of them are helping to save our world. For example, they plant trees. In

a small town in the USA a large group of girls cleaned the banks of 11 kilometres of their river. Young people

may hear about conservation through a song called "No one's going to change our world". It was made by

Cliff Richard and other singers. The money from it will help to conserve tigers, elephants and pandas on the

earth.

1.There're not so many plants, trees and flowers in Holland now because _____. [ ]

A. Holland doesn't need so many plants, trees or flowers

B. people in Holland need more land to live on

C. there has been little conservation there

D. the weather there isn't fit for farming

2.The song called  "No one's going to change our world" encourages people to _____ . [ ]

A. grow more trees and flowers

B. protect our environment and save our world

C. make our life easier and more comfortable

D. save plants and animals on the earth

3.If we go on changing the earth and everything around us, some day _____. [ ]

A. there will be no air on the earth

B. there will be no food for the people

C. we will have to work even harder

D. we will destroy ourselves

4. The word "conserve" in the last sentence means "_____". [ ]

A. help

B. save

C. change

D. destroy

5.The writer warns us _____. [ ]

A. not to be modern man and develop science

B. not to change the animal and plant's life

C. that our world is in danger

D. that people all over the world are in danger

题型:单项选择题

生长加倍次数

题型:单项选择题

下列关于敏感性分析法的相关说法中,不正确的是()。

A.若某参数的小幅度变化能导致效果指标的较大变化,则称此参数为敏感性因素

B.敏感性分析找不出影响最大、最敏感的主要变量因素

C.敏感性分析最常用的显示方式是龙卷风图

D.适用于项目不确定性对结果产生的影响进行的定量分析

题型:单项选择题

分娩后乳腺泌乳主要是由于()

A.雌激素的作用

B.雌激素和生长素的作用

C.雌激素、孕激素和催乳素的作用

D.孕激素和生长素的作用

E.催乳素和催产素的作用

题型:单项选择题

下列哪些说法是正确的()

A.安全原则是电子商务立法中强制性规范立法的基础

B.我国电子商务立法应采纳技术中立原则,技术中立原则意味着排斥对新技术的采纳

C.电子商务立法的作用之一体现在鼓励电子商务从业人员钻研业务、敬业爱岗

D.我国电子商务立法应采纳与国际电子商务规范接轨原则

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