题目
题型:单选题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235432-33657.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:A:当
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235433-90862.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235434-99194.png)
B:
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235434-19695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235434-32501.png)
C:
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235434-63700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235435-64010.png)
D:
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235435-75449.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235435-61529.png)
核心考点
试题【函数的图像的一个对称中心是( )A.B.C.D.】;主要考察你对正弦函数的图象与性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235418-40301.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235418-53616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235418-28834.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235418-28834.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235419-15017.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235419-86316.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235419-85404.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235414-71009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235414-42557.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235408-30432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235408-61459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235359-28250.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235400-30578.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235400-38143.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235400-93748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235400-32373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235400-32373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235401-24364.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235316-40036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235316-43588.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235316-94293.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235316-47354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235317-54660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190829/20190829235317-89710.png)
最新试题
- 1阅读下面文言文,完成文后各题,每题3分。张春,字泰宇,同州人。天启二年,辽东西尽失,廷议急边才,擢山东佥事,永平、燕建二
- 2已知直线C1:(t为参数),C2:(θ为参数).(1)当α=时,求C1与C2的交点坐标;(2)过坐标原点O作C1的垂线,
- 3—Is this your father? —No, ______. [ ]A. it is B. it
- 4下列地区中,盛产大豆、高粱、甜菜的是[ ]A.华北平原B.黄土高原C.三江平原D.山东丘陵
- 5—Shall I buy this toy for little David?—______. He might alr
- 6In the past, people used to _____ on foot or by horse. [
- 7下列实验设计或操作,能达到实验目的是[ ]A.①干燥氢气B.②检验氧气是否集满 C.③检验X溶液中是否含有D.④
- 8已知△ABC的面积为,,则的最小值是___________.
- 9外界物体在视网膜上形成物像的正确途径是[ ]A.物体反射的光线→晶状体→玻璃体→角膜→瞳孔→视网膜 B.物体反
- 10He had to retire(退休)early poor health.A.as a resultB
热门考点
- 1某英文报举办“家乡的变化”主题征文活动。请根据下表提示,以“The Changes in My Hometown”为题,
- 2已知符合A={(x,y)|x2=y+1,|x|<2,x∈Z},则集合A用列举法可表示为:______.
- 3过正方形ABCD的顶点A作线段AA1⊥平面ABCD,且AA1=AB,则平面ABA1与平面CDA1所成的二面角的度数是(
- 4在下面的括号里改正错别字。(2分)小题1:举止秦然( ) 小题2:顶礼模拜( )小题3:略见
- 5将纯锌片和纯铜片按图示方式插入同浓度的稀硫酸中一段时间,以下叙述正确的是( )A.两烧杯中铜片表面均有气泡产生 B.
- 6如图,△ABC中,∠ABC的平分线交AC于E,BE⊥AC,DE∥BC交AB于D,若BC=4,则DE=( )。
- 7几年前,大连市公汽联营公司702路4227号双层巴士司机黄志全在行车途中突然心脏病发作,在生命的最后一分钟,他做了三件事
- 8下列有关保护生物多样性的措施中最有效的是( )A.建立自然保护区B.加强教育和法律管理C.建立濒危物种库D.引进更多外
- 9文化对人的影响具有潜移默化的特点,处在一定的文化氛围中就能提高文化素养。[ ]
- 10已知:在25℃时, H2OH++OH- KW=10-14 CH3COOHH++CH3COO- Ka=1.8×1