函数f(x)由表定义:若a0=5,an+1=f(an),n=0,1,2,…,则a

题型:填空题

问题:

函数f(x)由表定义:若a0=5,an+1=f(an),n=0,1,2,…,则a2009=______
x25314
f(x)12345
考点:数列的概念及简单表示法
题型:填空题
对任意x∈R,给定区间[k-
1
2
,k+
1
2
](k∈z),设函数f(x)表示实数x与x的给定区间内
整数之差的绝对值.
(1)当x∈[-
1
2
1
2
]
时,求出f(x)的解析式;当x∈[k-
1
2
,k+
1
2
](k∈z)时,写出用绝对值符号表示的f(x)的解析式;
(2)求f(
4
3
),f(-
4
3
)
的值,判断函数f(x)(x∈R)的奇偶性,并证明你的结论;
(3)当e-
1
2
<a<1
时,求方程f(x)-loga
x
=0
的实根.(要求说明理由e-
1
2
1
2
题型:填空题

与两次鸦片战争相比较,甲午中日战争最大的特点在于(  )

A.战争的性质和战争的强度

B.清政府宣战的方式和战争中的策略

C.战争结束的方式和缔约双方的立场

D.战争反映的时代特点和战争对中国的影响

题型:填空题

某发电厂新建2台600MW机组,以发电机一变压器组单元接线接入厂内220kV升压站,220kV送出线路4回。

220kV电气主接线为双母线单分段,在选择220kV断路器时,不需要求的项目是( )。

A.近区故障开断能力;
B.并联开断能力;
C.失步开断能力;
D.电容性电流的开断能力。

题型:填空题

Louise was 72 years old and she lived by herself. The first thing she noticed when she came downstairs that Sunday morning was that her __36____ window was open. In fact, it was so wide open that she had ___37___ closing it. Then she realized that things were not in their proper __38____. Finally, when she found her empty ___39___ on the kitchen table, she realized the awful __40____. At first, she didn’t know what to do. Then she decided to ___41___ her son, Derek.
Derek’s wife Sybil answered the phone, “It’s your mother,” she _42___him, coldly. Louise told Derek about the open window, about things being in the wrong places and about the ____43__ missing from her purse.
“ All right,” said Derek, “Don’t __44___ anything. I’ll be __45___ in half an hour.
Louise ___46__ and made herself a pot of tea and some toast. Then she went from room to room wondering __47___ anything else was missing.
When Derek arrived, he was content to __48___ her looking so calm. “Have you rung the ___49___?”he asked. “No? Then I’ll do that straight away.” So he rang the police.
As it was Sunday,__50____ the only detectives were out. However, the police were polite, but vague(含糊的) . “ We’ll send __51__ round as soon as possible.” They said.
Derek telephoned his wife. “I’m not sure when I’ll be home, love,” he told her. “I’ve got to ___52__ for the police.” While Derek and his mother waited, Derek _53___ the catches (挂钩) on the windows and locks on the doors. All of them were old and some of the catches hardly__54___ at all. Derek felt __55___. His mother was an old woman, after all. “I’ll have to change all these.” he told her.
小题1:
A.washroomB.bedroomC.kitchenD.bathroom
小题2:
A.strength B.puzzleC.reason D.trouble
小题3:
A.positionsB.placesC.directionsD.situations
小题4:
A.purseB.vaseC.potD.envelope
小题5:
A.mistakeB.messageC.truthD.news
小题6:
A.visitB.askC.ringD.punish
小题7:
A.invited B.informedC.statedD.scolded
小题8:
A.noteB.coinC.moneyD.bill
小题9:
A.sayB.move C.touch D.prepare
小题10:
A.here B.roundC.offD.away
小题11:
A.sighed B.relaxed C.whispered D.hurried
小题12:
A.ifB.whyC.howD.where
小题13:
A.realizeB.findC.knowD.sense
小题14:
A.policeB.neighbourC.hospitalD.friend
小题15:
A.generally B.luckily C.considerably D.unfortunately
小题16:
A.anyoneB.someoneC.everyoneD.none
小题17:
A.hopeB.askC.waitD.call
小题18:
A.examinedB.repairedC.fixedD.tested
小题19:
A.lockedB.openedC.helpedD.worked
小题20:
A.excitedB.sillyC.worriedD.Guilty
题型:填空题

十进制数75用二进制数表示是

A.1100001

B.1101001

C.0011001

D.1001011

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