重庆市南开中学校2026-2027学年高三上学期11月质量检测数学试题

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重庆南开中学高2027届高三年级质量检测(三)

数学试题

注意事项:

1.本试卷满分150分,考试时间120分钟.

2.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上.

3.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑.如需改动,用橡皮擦干净后,再选涂其它答案标号.回答非选择题时,将答案写在答题卡上,写在本试卷上无效.

4.考试结束后,将本试卷和答题卡一并交回.

第I卷(选择题共58分)

一、单选题(本题共8小题,每小题5分,共40分.在每小题给出的选项中,只有一项符合题目要求)

1.已知复数(为虚数单位),则的虚部为(     )

A.1  B.-1  C.  D.

2.已知数列满足,则(     )

A.-1  B.  C.  D.2

3.已知随机变量,若,则(     )

A.0.4  B.0.3  C.0.2  D.0.1

4.已知向量,若,则实数(     )

A.  B.  C.  D.

5.已知函数,若,则实数的最大值为(     )

A.0  B.1  C.  D.

6.已知三棱锥的三条侧棱两两垂直,底面等边的边长为,则该三棱锥的外接球的表面积为(     )page number 0

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A.  B.  C.  D.

7.已知等比数列的公比为,且,设,则下列结论正确的是(     )

A.  B.  C.  D.

8.在平行四边形中,已知为的中点,为线段与的交点,则的值为(     )

A.  B.  C.2  D.

二、多项选择题(本大题共3小题,每小题6分,共18分.在每小题给出的选项中,有多项符合题目要求,全部选对的得6分,有选错的得0分,部分选对的得部分分)

9.已知为三个不同的平面,为两条不同的直线.下列条件中,能推出的有(     )

A.

B.

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10.已知复数,下列说法中正确的有(     )

A.

B.

C.若,则有

D.若,为虚数单位,则的最大值为

11.已知点是内一点,于点D,于点,于点,设线段,的长度分别为,,,则(     )

A.

B.page number 1

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C.

D.的最大值为2

第Ⅱ卷(非选择题共92分)

三、填空题(本大题共3小题,每小题5分,共15分.把答案填写在答题卡相对应位置上)

12.函数同时满足下列三个条件:;②对;③在上单调递减.请写出一个符合条件的函数解析式,___________

image

13.已知为数列的前项和,且,则___________.

14.已知函数的部分图象如图所示,曲线与直线在轴右侧第一个交点记为A,与直线在轴右侧第二个交点记为B.已知,则___________.

四、解答题(本大题共5小题,共77分.解答应写出文字说明、证明过程或演算步骤)

15.在中,内角A,B,C的对边分别是,,,且.

(1)求角B;

(2)若,,求的周长.

16.如图,在梯形中,,,,为的中点,将沿翻折至的位置(使点D落在点的位置),连接,已知.page number 2

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