对于函数f(x)=sinx当sinx≥cosx时cosx当sinx<cosx时,

题型:选择题

问题:

对于函数f(x)=
sinx当sinx≥cosx时
cosx当sinx<cosx时
,下列结论正确的是(  )
A.函数f(x)的值域是[-1,1]
B.当且仅当x=2kπ+
π
2
时,f(x)取最大值1
C.函数f(x)是以2π为最小正周期的周期函数
D.当且仅当2kπ+π<x<2kπ+
5
4
π
(k∈Z)时,f(x)<0
考点:任意角的三角函数
题型:选择题

关于睾丸间质细胞的描述,错误的是()

A.可合成睾酮

B.位于睾丸纵隔内

C.常成群分布

D.胞质嗜酸性

E.细胞核圆,核仁明显

题型:选择题

脑出血最常见的出血血管是

A.小脑的齿状核动脉

B.基底动脉的旁正中动脉

C.大脑中动脉的豆纹动脉

D.脉络膜前动脉

E.前交通动脉

题型:选择题

Word:
In early February, after raking in some $625 million worldwide,"Titanic"began turninga profit and executiVes at Fox and Paramount breathed easier. A gaggle of Oscars wouldguarantee it a long run and a billion-dollar gross.
It’s got legs most hit movies enjoy big opening-weekend sales, then revenues declinequickly. But"Titanic"has pulled in more than $20 million for a record eight weekends in arow and is likely to extend that.
Show them the money because studios are furtive about their financial arrangements,cost and revenue estimates tend to broad strikes.It’s certain, however, that Fox and Paramountwill have a lot of pie to carve.Oscars galore While it’s unlikely to pull a"Ben Hur", "Titanic"is a virtual lock to go home with a bagful of statuettes.
考试要求:
1.设置第一段的段前间距和段后间距为1.5行。
2.将第二段文字设置为加粗和倾斜。
3.将第三段的文字效果设置为“礼花绽放”。

题型:选择题

深度为k的二叉树至多有 ______。

A.2k个结点

B.2K-1结点

C.2K-1结点

D.2k-1-1个结点

题型:选择题

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