若点P是曲线y=x2-lnx上任意一点,则点P到直线y=x-2的最小距离为 __

题型:填空题

问题:

若点P是曲线y=x2-lnx上任意一点,则点P到直线y=x-2的最小距离为 ______.

考点:点到直线的距离
题型:填空题

I don’t know where I ______ my dictionary, which cost me 50 yuan.

A.have lied

B.had lain

C.have laid

D.have laid

题型:填空题

承购包销是指通过招标方式确定债券承销商和发行条件的发行方式。(  )

题型:填空题

Miss Grey lived in a small house. She was old and did not like noise at all , so she was very pleased when her noisy neighbour moved out .A young man moved in and Miss Grey thought the man seemed to be quiet.

But at three o’clock the next morning , the noise of a dog woke her up . She thought she had never heard a dog there before . It must be the young man’s dog . So she telephoned the young man , said something bad about the dog and then hung up the telephone before he could answer. Nothing more happened until three o’clock the next morning . Then Miss Grey’s telephone rang , and when she answered , a voice said ,“ You telephoned me twenty four hours ago .Now I’ve rung you up to say that I have’t a dog . ”

根据短文内容,判断以下句子的正(T)误(F)。(共5小题,每小题2分,满分10)

小题1:Miss Grey felt sorry when her noisy neighbour moved out.

小题2:Miss Grey’s new neighbour was as the old one .

小题3:Some noise woke her up in the early morning .

小题4:She thought the new neighbour had brought a dog with him.

小题5:The young man rang up Miss Grey in the early morning , because he wanted to punish her.

题型:填空题

办公自动化是一门综合技术,除计算机技术、通信技术、系统科学以外,主要还有

A.管理科学

B.决策科学

C.行为科学

D.信息科学

题型:填空题

致病性大肠杆菌能引起()。

A.婴儿腹泻

B.细菌性痢疾

C.肠热症

D.流感

E.脑膜炎

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