极坐标方程分别为ρ=2cosθ和ρ=sinθ的两个圆的圆心距为______.

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问题:

极坐标方程分别为ρ=2cosθ和ρ=sinθ的两个圆的圆心距为______.

考点:简单曲线的极坐标方程
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行政许可的审查包括哪些内容

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下列各句中,没有语病、语意明确的一句是()

A.近日记者从省牧业局、省商务厅了解到,我省已做好了猪肉储备工作,猪肉价格将

趋于平稳,如果价格一旦涨幅过大,立即投放储备猪肉。

B.乔盛的长篇小说《黄沙窝》以众多女性人物的命运沉浮为载体,深刻地展现出千百

年来封建文化桎梏给广大妇女造成的沉重的身心伤痕。

C.山上的食品已严重不足,为了最后的胜利,这些可爱的战士决定把食品留给晚上来的战友食用。

D.著名作家曹文轩认为,文学性是幻想文学的基础。当下的幻想文学让他产生很多忧虑,因为很多此类作品都缺乏文学性,“幻想”成了“胡思乱想”。

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Have you ever tried to draw a straight line, only to find it turns out all wrong? Or, have you ever wanted to show ___36___ at a party and found the song you’d practiced so many times suddenly__37_ more difficult? I’ve had both these__38___. As a senior student, I have to ___39__ many exams. Each time, I think, “ I__40___ fail this time,’’ but I get a low mark. Don’t be surprised---it’s not __41___ I don’t try, do enough preparation, __42__ take it seriously. On the contrary, it is because I give it too _43__ attention. The thought “ I must pass” makes me taste the terrible flavor of failure.
I often___44___ to my friends, “ Don’t be too hard ___45____ yourself.” However, when I __46___ my own goals, I do not listen to my own advice. So why not ___47__ this crazy thought of achieving the best? Just face the problem__48____before you with a calm mind, work and you will succeed.
In my opinion, __49___ a calm state of mind is a skill for life. People__50__ want to succeed realizing this is of __51______ importance. So __52___ time you’re trying to draw a straight line or ___53___ a performance, tell yourself, “ If I can just do it _54___ than last time, it’s a success.” Keep a calm state of mind, and you will be happy __55____you succeed or fail.
小题1:
A.aroundB.offC.outD.in
小题2:
A.becameB.becomeC.becomingD.becomes
小题3:
A.experiencesB.experienceC.times D.difficulties
小题4:
A.enterB.makeC.takeD.join
小题5:
A.won’tB. can C.needD.needn’t
小题6:
A.because ofB./C.thereforeD.because
小题7:
A.andB.orC.butD.nor
小题8:
A.manyB.fewC.littleD.much
小题9:
A.sayB.adviseC.tellD.encourage
小题10:
A.offB.onC.toD.for
小题11:
A.giveB.holdC.buildD.set
小题12: A. throw away      B. get away         C. take up         D push off
小题13:
A.lieB.liesC.lyingD.laying
小题14:
A.keepingB.stayingC.remainingD.making
小题15:
A.whomB.whichC.whoD./
小题16: A no                B. little         C. very           D. great
小题17:
A.lastB.the lastC.nextD.the next
小题18:A. put on             B play on                C. give on         D show on
小题19:
A.bestB.betterC.goodD.well
小题20:
A.ifB.eitherC.neitherD.whether
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文化模式

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抗磷脂综合征的最新实验室诊断标准涉及的三个指标分别是()、()和()。

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