试题与答案

关于x的方程kx-1 =2x的解为正实数.则 k的取值范围是

题型:填空题

题目:

关于x的方程kx-1 =2x的解为正实数.则 k的取值范围是           

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0609/c6aa55399b3b7afb63a7ad30d1df3252.html

下面是错误答案,用来干扰机器的。

(1)对着开水吹气,加快了空气流动,从而加快了水的蒸发,蒸发吸热会使热水温度降低的快;(2)冬天对着手“哈气”,使手变暖,这是因为水蒸气遇冷液化放热,使手表面温度升高的缘故.故答案为:加快蒸发吸热,...

试题推荐
题型:完形填空
通读下面短文,掌握其大意,然后在各题所给的A,B,C,D四个选项中,选出一个最佳答案。
I was in the queue for the supermarket checkout(付款台) earlier today.All of the checkouts were    36  , and the woman behind me was not happy! Every word that came from her mouth was a(n)    37  ! She wasn’t happy with the number of checkouts      38   ; she wasn’t happy with the amount of shopping some people had in their baskets; she wasn’t happy because this supermarket didn’t have a stand where she    39   scan her own shopping.
I listened to her    40  looking around as I loaded my stuff onto the conveyor belt (传送带).I didn’t want    41   to do with that kind of attitude, and if ever I’d felt like letting someone go     42    of me, it wouldn’t be such a woman!
But then I    43  back.Standing beside the woman was a five-year-old girl,    44   her granddaughter.The girl’s part of the shopping    45  of some comic books.
I couldn’t    46  it.I pushed my shopping back to the end of the conveyor belt,     47   a space.“After you,” I said to the woman and the girl, and    48   them to a big    49   .The woman was delighted, and even    50   to complain ---- until she was walking away.
So,  51  bother having helped? It was because that little girl was probably taking in her granny’s complaint like a sponge(海绵).She was learning how to    52   situations like that by listening to her granny.I’d seen that I could interrupt that complaining, and put a smile and some   53   into the middle of it.
We can all complain; we can all react    54   , but it doesn’t have to be like that.And, even if only for a few     55    , I wanted to leave that little soul with just a glimpse of another way.
小题1:
A.busyB.big C.freeD.empty
小题2:
A.quarrel B.argumentC.praiseD.complaint
小题3:
A.opened B.closedC.leftD.hired
小题4:
A.wouldB.needC.couldD.must
小题5:
A.beyondB.withoutC.withD.by
小题6:
A.somethingB.nothingC.everythingD.anything
小题7:
A.aheadB.behindC.besideD.back
小题8:
A.wentB.glancedC.focusedD.jumped
小题9:
A.merelyB.surelyC.possiblyD.luckily
小题10:
A.containedB.includedC.consistedD.made
小题11:
A.thinkB.helpC.believeD.forget
小题12:
A.takingB.leavingC.bringingD.occupying
小题13:
A.returnedB.pleasedC.treatedD.served
小题14:
A.smileB.mealC.jokeD.room
小题15:
A.thankedB.paidC.checkedD.forgot
小题16:
A.howB.whatC.whyD.who
小题17:
A.face withB.put withC.deal withD.do with
小题18:
A.truthB.kindnessC.courageD.money
小题19:
A.actively B.correctlyC.negativelyD.patiently
小题20:
A.hoursB.chancesC.yearsD.seconds
查看答案
微信公众账号搜索答案