荡秋千是大家喜爱的一项体育活动。随着科技的迅速发展,将来的某一天,同学们也许会在

题型:计算题

问题:

荡秋千是大家喜爱的一项体育活动。随着科技的迅速发展,将来的某一天,同学们也许会在其他星球上享受荡秋千的乐趣。假设你当时所在星球的质量是M 、半径为R,可将人视为质点,秋千质量不计、摆长不变、摆角小于90 °,万有引力常量为G。求:

(1 )该星球表面附近的重力加速度g等于多少?

(2 )若经过最低位置的速度为v0,你能上升的最大高度是多少?

考点:万有引力定律的其他应用机械能守恒定律
题型:计算题

给多音字选择正确的读音,打上“√”。

朝(cháo zhāo)阳处雪已融化,雪水顺着斜谷流过来。

连那些最不爱花的人,也禁(jìn jīn)不住美的吸引,一得(de dé děi)空( kōng kòng)暇,就围在花圃前欣赏起来。

她决定把她的所有东西给(jǐ gěi)予他人。

这个太阳好像背负着重荷(hé hè)似的一步一步、慢慢地努力上升。后来太阳才慢慢地冲(chōng  chòng)出重(zhòng chóng)围,出现在天空。

题型:计算题

当常规骨显像显示下胸椎和腰椎病变,但病变的性质不明确时,需做()。

A.双足骨显像

B.TOD(tail on the detector)位像

C.下胸椎和腰椎后斜位像

D.胸部前斜位像

E.双臂抬高胸部后位像

题型:计算题

硅整流发电机的输出特性是指()一定时,发电机的()和()之间的关系。

题型:计算题
完形填空:(满分20分)
Far from a Family Christmas
My Air Force room in Florida was   36  and quiet—I was alone.My five roommates were gone for the holidays; I had chosen to    37  behind in the camp.Being young and far from my home, I felt   38  .My room was comfortable enough,   39  I hadn’t realized until then what made it so—the   40  of others walking, joking or just lying on their beds.
I was not able to sleep.I was    41  of being on my own—in fact, preferred it at times—but tonight was   42  .Tossing and turning in the darkened room gave no   43  .The last sign of daylight had disappeared,   44  my inner depression.  45  , the glow of Christmas lights on the tall pines would only   46  me of my great misery.
Suddenly, I heard weak sound of men   47  to sing.Yes, the voices grew louder and came my way.I  48  still, enjoying the sound.
In the corridor(通道,走廊)   49  my room, voices came near enough for me to hear Christmas carols(颂歌) being   50  .Suddenly, there, four airmen, identities unknown, were slightly unsteadied by holiday   51  .The first held a Coke bottle with a lit candle   52  its top.The others formed a dancing line behind him.
  53  I was in the room, with joyful faces in the flickering(摇曳的) light, they sang me several carols, wished me a   54  and left as fast as they had arrived.
I slept soundly soon after, burying my face in my pillow,   55  that someone had cared.
小题1:
A.clearB.emptyC.amusingD.interesting
小题2:
A.remainB.leaveC.helpD.work
小题3:
A.disappointedB.friendlyC.lonelyD.lost
小题4:
A.alsoB.stillC.howeverD.but
小题5:
A.impatienceB.presenceC.interestD.delight
小题6:
A.capableB.ableC.skilledD.experienced
小题7:
A.poorB.goodC.differentD.standard
小题8:
A.funB.comfortC.effortD.progress
小题9:
A.appealing toB.sticking toC.leading toD.adding to
小题10:
A.ThereforeB.OtherwiseC.BesidesD.Yet
小题11:
A.remindB.recallC.rememberD.think
小题12:
A.managingB.attemptingC.happeningD.deciding
小题13:
A.noticedB.sleptC.liedD.lay
小题14:
A.oppositeB.beyondC.outD.within
小题15:
A.announcedB.acceptedC.playedD.offered
小题16:
A.noiseB.confidenceC.cheerD.optimism
小题17:
A.stuck inB.attached toC.tied toD.involved in
小题18:
A.Watching B.SeeingC.GuessingD.Admitting
小题19:
A.good luckB.happy New YearC.merry ChristmasD.happy birthday
小题20:
A.gratefulB.satisfiedC.pleasedD.surprised
题型:计算题

以下哪种服务不在客服中心的服务范围之内()

A.公司介绍

B.促销活动介绍

C.其它运营商用户使用17909业务

D.客户自备终端的三包服务

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