有两个同学分别在大庆和广州的物理实验室,各自在那里利用先进的DIS系统较准确地探

题型:问答题

问题:

有两个同学分别在大庆和广州的物理实验室,各自在那里利用先进的DIS系统较准确地探究了“单摆的周期T与摆长l的关系”,他们通过互联网交换实验数据,并由计算机绘制了T2-l图象,如图甲所示.在大庆的同学所测实验结果对应的图线是______(填“A”或“B”).另外,在广州做探究的同学还利用计算机绘制了a、b两个摆球的振动图象(如图乙),由图可知,两单摆摆长之比

la
lb
=______.在t=1s时,b球振动的方向是______.

考点:实验:用单摆测定重力加速度
题型:问答题

为迎接2008年奥运会,中央和北京市财政支出1800亿元用于城市基础设施建设。这一支出属于财政支出中的:                                                       (   )

A.社会保障支出

B.行政管理支出

C.经济建设支出

D.科教文卫事业支出

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Tomorrow evening I will be interviewed on stage by a museum official. I will be an interpreter, talking from experience as a disability rights lawyer and activist.
In “special” schools and camps for children with physical and mental disabilities, I grew up knowing we were a category of person that the world did not want. Most of us had a story of some doctor advising our parents to put up away or to let us die. We owed our survival to parents who had irrationally(不理性地) bonded with us. We knew we were lucky and hoped our luck would hold. To increase the chance of surviving, we tended to be charming. We developed thick skins.
By the time I roll onto the stage the next night, I’ve thought a lot about there and here, then and now. When the first question comes, I tell them about my fascination with the wheelchair, and somehow it sounds funny, and laughter fills the room. We talk from the horror of Nazis killing (Nazis once killed the disabled patients as useless) to a funny confession that I, too, tend to stare at disabled people on the street.
What has come over me? In this room, people with disabilities in thrilling variety make me feel at home. Here people, disabled and not, are gathered by choice.
I haven’t forgotten that 2 million people remain in US disability institutions, that some disabled children still cannot attend mainstream schools, that too many of us live in poverty. But I can’t hold onto anger and sorrow for I feel a shared sense of possibility, a drive for a world that will embrace both the fit and the unfit and hold them so dear that the division dies.
小题1:What’s the author according to the passage?
A.A disabled lawyer.
B.A reporter.
C.An actor
D.An interviewer
小题2:The underlined phrase “thick skins” in the second paragraph probably means__.
A.with more clothes
B.making skin dirty
C.caring nothing of ignorance
D.growing more slowly than others
小题3:The second paragraph is mainly focused on ________.
A.the growth of the disabled people
B.the hatred of the disabled people
C.the love of the disabled people
D.the appreciation of the disabled people
小题4:It can be sensed but not clearly stated that the author________.
A.likes to be interviewed in a museum
B.can tell funny stories
C.has charming personality
D.is humorous and optimistic
小题5:What’s the author’s attitude towards the future?
A.Desperate
B.Hopeful
C.Negative
D.Objective
题型:问答题

瓦斯有哪些性质?

题型:问答题

“塞因塞用”的治则适用于

A.实热壅积的阳明腑实证
B.瘀血内阻所致的出血证
C.里热盛极,格阴于外的真热假寒证
D.中气不足所致的脘腹胀满

题型:问答题

某混凝土浇筑溜槽支架的斜向支撑杆,上部支点距地面的高度为4m,下部支出的距离为3m,问该支撑杆的最小长度是多少?

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