(2012•泸州一模)根据UIC(国际铁道联盟)的定义,高速铁路是指营运速率达2

题型:多选题

问题:

(2012•泸州一模)根据UIC(国际铁道联盟)的定义,高速铁路是指营运速率达200km/h以上的铁路和动车组系统,如图所示为武广高速铁路客运运行照片.据广州铁路局测算:当和谐号动力组列车以360km/h的速度在水平轨道上匀速行驶时,受到的阻力约为l06N.如果撞击时间约为0.0ls去撞击一块静止的0.5kg障碍物,障碍物被撞后附着在列车上,且产生大约5000N的撞击力,瞬间可能造成列车颠覆,后果不堪设想.根据以上信息下列判断正确的是(  )

A.列车以360km/h的速度匀速运动时的牵引力约为l06N

B.列车按题中条件,撞击障碍物受到的合外力冲量约为180N•S

C.列车以360km/h的速度在水平轨道上匀速行驶时,列车的牵引力功率约为105kw

D.列车按题中条件和障碍物撞击时,列车的加速度大小约为104m/s2

考点:平均功率和瞬时功率的区别动量定理
题型:多选题

苹果放在塑料中,过不了几天,我们会闻到一股淡淡的酒香味,这是下列哪种生物引起的[ ]

A.青霉

B.曲霉

C.酵母菌

D.乳酸菌

题型:多选题

完整地理解一个计算机信息系统的设计应该包括业务系统和______两个相互联系的组成部分的设计。

A.管理系统

B.技术系统

C.逻辑系统

D.目标系统

题型:多选题
阅读下面短文,从短文后所给各题的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
When I was in middle school, I was one of the smaller players on the basketball team. In our first game of the season, we were   31  to face a good team, all of whom were tall guys. Naturally, at my   32 , it would have been easy to be   33  by our competitors.
On game day, my basketball coach called me over to him. He was a strong and tough coach, and in his   34  rough manner said, “Joel, you’re not that   35 , but let me tell you that size doesn’t matter. Don’t be afraid. What   36  is right down in here.” He pointed his finger at his  37  as he continued, “Joel, you’ve got a big heart, and you’re to   38  it this year.”
When I heard the coach’s   39  , I stood taller than usual! I thought to myself: The coach believes in me! My confidence   40  and I played better that year than I’d ever done before.
It’s   41  what we can achieve when we know somebody really believes in us. That coach took a little time to make a big   42   . He took time to make me confident in myself. If we’re going to   43  the best in people, we need to sow seeds of   44  .
As the saying goes, “Love looks for a way of being constructive.”   45  , love looks for ways to help improve somebody else’s life.
When people are   46  us, they should leave better off than they were before. People should feel   47  and inspired after spending any time with you and me  48  feeling discouraged or defeated.
Remember, there’s   49  greater investment(投资)in life than in being a people builder. Relationships   50  much more to us than our achievements.
小题1:
A.requested
B.arranged
C.determined
D.accepted
 
小题2:
A.age
B.size
C.weight
D.experience
 
小题3:
A.injured
B.destroyed
C.frightened
D.cheated
 
小题4:
A.common
B.normal
C.formal
D.usual
 
小题5:
A.big
B.young
C.tall
D.strong
 
小题6:
A.matters
B.promises
C.attracts
D.matches
 
小题7:
A.back
B.shoulder
C.head
D.chest
 
小题8:
A.pass
B.get
C.make
D.help
 
小题9:
A.stories
B.words
C.advice
D.praise
 
小题10:
A.built up
B.made up
C.took up
D.turned up
小题11:
A.interesting
B.amazing
C.confusing
D.convincing
 
小题12:
A.sense
B.result
C.difference
D.surprise
 
小题13:
A.speak of
B.bring out
C.put up
D.stand out
 
小题14:
A.hope
B.success
C.fortune
D.excitement
 
小题15:
A.Above all
B.On the contrary
C.In other words
D.In this case
 
小题16:
A.around
B.against
C.above
D.below
 
小题17:
A.delighted
B.challenged
C.moved
D.respected
 
小题18:
A.as well as
B.rather than
C.in addition to
D.except for
 
小题19:
A.some
B.still
C.no
D.none
 
小题20:
A.influence
B.leave
C.produce
D.mean
题型:多选题

炸发适用于鱼肚、蹄筋等,具体涨发方法完全一样。

题型:多选题

一中年女性,结喉正中偏右有一半圆形包块,初期如雀蛋大,现如鸡蛋大,边界清楚,表面光滑,皮色如常,能随吞咽上下移动,考虑为()

A.气瘿

B.肉瘿

C.筋瘿

D.血瘿

E.石瘿

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