已知函数f(x)的定义域是{x|x∈R,x≠k2,k∈Z}且f(x)+f(2-x

题型:解答题

问题:

已知函数f(x)的定义域是{x|x∈R,x≠
k
2
,k∈Z}
且f(x)+f(2-x)=0,f(x+1)=-
1
f(x)
,当0<x<
1
2
时,f(x)=3x
(1)求证:f(x)是奇函数;
(2)求f(x)在区间(2k+
1
2
,2k+1)(k∈
Z)上的解析式;
(3)是否存在正整数k,使得当x∈(2k+
1
2
,2k+1)
时,不等式log3f(x)>x2-kx-2k有解?证明你的结论.
考点:对数函数的图象与性质
题型:解答题

有效的志愿者管理应该遵循的步骤不包括( )。

A.需要评估

B.迎新说明与训练

C.方案策划

D.奖励与惩罚

题型:解答题

梁柱中箍筋和构造钢筋的保护层厚度不应小于______。

题型:解答题

“轻托”托盘所承载的重量一般在()。

A.5千克以下

B.5-8千克

C.8-10千克

D.10千克以上

题型:解答题

在含有大量纤维性强的药物的片剂制备时,宜选用的黏合剂是()

A.糖浆

B.乙醇

C.微晶纤维素

D.水

E.干淀粉

题型:解答题

A recent poll indicated that half the teenagers in the United States believe that communication between them and their parents is (1) and further that one of the prime causes of this gap is (2) listening behavior. As a(an) (3) in point, one parent believed that her daughter had a severe (4) problem. She was so (5) that she took her to an audiologist to have her ear tested. The audiologist carefully tested both ears and reported back to the parent:"There’s nothing wrong with her hearing. She’s just (6) you out. "

A leading cause of the (7) divorce rate (more than half of all marriages end in divorce) is the failure of husbands and wives to (8) effectively. They don’t listen to each other. Neither person (9) to the actual message sent by the other.

In (10) fashion, political scientists report that a growing number of people believe that their elected and (11) officials are out of (12) with the constituents they are supposedly (13) Why Because they don’t believe that they listen to them. In fact, it seems that sometimes our politicians don’t even listen to themselves. The following is a true story: At a national (14) conference held in Albuquerque some years ago, then Senator Joseph Montoya was (15) a copy of a press release by a press aide shortly before he got up before the audience to (16) a speech. When he rose to speak, (17) the horror of the press aide and the (18) of his audience, Montoya began reading the press release, not his speech. He began, "For immediate release. Senator Joseph M. Montoya, Democrat of New Mexico, last night told the National... " Montoya read the entire six page release, (19) with the statement that he "was repeatedly (20) by applause.

14()

A.legislative

B.legitimate

C.legalized

D.liberal

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