令患者尽量做颈部前屈,检查这一手放于头部病侧,做旋向健侧动作,另一手握住患肢腕部,呈

题型:单项选择题 A1/A2型题

问题:

令患者尽量做颈部前屈,检查这一手放于头部病侧,做旋向健侧动作,另一手握住患肢腕部,呈反方向牵拉是()。

A.屈颈试验

B.臂丛神经牵拉试验

C.前屈旋颈试验

D.血管试验

E.颈椎引伸试验

考点:疼痛学主治医师疼痛的常用诊断方法疼痛的常用诊断方法题库
题型:单项选择题 A1/A2型题

马口“花博园”内有多彩茶树,在同一植株上有“大玛瑙”、“雪狮子”、“大紫袍”等不同品种的茶花.园艺师采用的培育方法是(  )

A.嫁接

B.压条

C.扦插

D.播种

题型:单项选择题 A1/A2型题
附加题:(如果你的全卷得分不足150分,则本题的得分将计入总分,但计入总分后全卷不得超过150分)
(1)解方程x(x-1)=2.
有学生给出如下解法:
∵x(x-1)=2=1×2=(-1)×(-2),
x=1
x-1=2
x=2
x-1=1
x=-1
x-1=-2
x=-2
x-1=-1

解上面第一、四方程组,无解;解第二、三方程组,得x=2或x=-1.
∴x=2或x=-1.
请问:这个解法对吗?试说明你的理由.
(2)在平面几何中,我们可以证明:周长一定的多边形中,正多边形面积最大.
使用上边的事实,解答下面的问题:
用长度分别为2,3,4,5,6(单位:cm)的五根木棒围成一个三角形(允许连接,但不允许折断),求能够围成的三角形的最大面积.
题型:单项选择题 A1/A2型题

不允许在前悬架支承装置和导向装置部件上进行焊接和矫直修复。

题型:单项选择题 A1/A2型题

Some people are pessimistic(悲观的)when they think about the future. They say that, a hundred years from now, we will have used up most of the earths resources. We will have made our seas so dirty that we will not be able to eat fish from them. There will be so many people in the world that we will have to use all the countryside for housing; there will be no farmland left.

Other people have a different idea about the future. In their view, the city of the future will be a huge pyramid-shaped(金字塔形的) building, which will be floating on the surface of the sea. About 5,000 families will live there, and there will also be schools, shops in it.

In a hundred years’ time, people will not need to use oil. They will heat their homes with power from the sun.

Think of space. Perhaps a station will be set up on the moon; people will be able to visit the moon as tourists. They may even spend their holidays in space, travelling from planet to planet.

What an interesting picture!

Many people don't think about the future. “I don't care. I’ll be dead. ”they say. But it is our duty to care because the world of a hundred years’ time will be the world of our children’s and their children after them.

小题1:How many viewpoints are discussed here about the future?

A.Two

B.Three

C.Four

D.Five小题2:In the pessimistic view, people will         in a hundred years ’time.

A.have to use power from the sea

B.have to live on the moon

C.be able to grow food on the sea

D.find it difficult to live on the earth小题3:Where will people live in the future in the optimistic view?

A.On the moon

B.On the sea

C.In pyramids

D.On other planets小题4:The writer of the article seems to agree        .  

A.with those who look at the bright side of the future

B.with those who take a pessimistic view about the future

C.with those who won’t trouble their heads about the future

D.to none of these viewpoints

题型:单项选择题 A1/A2型题

如图所示,在粗糙水平台阶上静止放置一质量m=1.0kg的小物块,它与水平台阶表面的动摩擦因数μ=0.25,且与台阶边缘O点的距离s=5m.在台阶右侧固定了一个

1
4
圆弧挡板,圆弧半径R=5
2
m,今以O点为原点建立平面直角坐标系.现用F=5N的水平恒力拉动小物块,小物块在水平台阶上运动一段时间后撤去拉力(已知重力加速度g=10m/s2).

(1)为使小物块不能击中挡板,求拉力F作用的最长时间;

(2)若小物块在水平台阶上运动时,水平恒力一直作用在小物块上,求小物块击中挡板上的位置坐标.

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