2008高三·天津·竞赛
1 . 已知长方体
满足
,平面
分别与
交于点
.则四面体
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281270a9edd61e9d3284f86a9334dc01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7935fe3125f247b7bea4f065ce9ad985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493f7e07b2391eef64119af11510fd67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8eb8ce67d4a46a38bd00b35c1ffced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b6ff531211a22b5fdbcabea7295d79.png)
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2008高三·天津·竞赛
2 . 设
表示不超过实数
的最大整数.则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91d22a4fb92dac0fe076a5ec7d2cd88.png)
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2008高三·天津·竞赛
3 . 考虑
的正方形方格表中的25个格点.则通过至少3个格点的不同直线的数目为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fb9d60d456560e9bac66c8b20c49bb1.png)
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4 . 若方程
有模为1的根,则所有模为1的根的和为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f48865c256fe67ae7376eeba963673.png)
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2008高三·天津·竞赛
5 . 函数
.则
的最大值与最小值的乘积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19903d84cb1c9176a2669ee6a111efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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2008高三·天津·竞赛
6 . 设不定方程
的正整数解(
)中满足
均大于2008的不同解的数目为
.则
满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdf592651a58ab5bb35e79392921614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
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2008高三·天津·竞赛
7 . 考虑集合
的所有非空子集,若一个非空子集中的偶数的数目不少于奇数的数目,则称这个子集是“好子集”.那么,好子集的数目为个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137cf9df293655788d9628cecbce13b9.png)
A.631 | B.633 | C.635 | D.637 |
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8 . 若方程
(
)的所有根为
(
),方程
(
,
)的所有根为
(
).则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21ce7ebbd6614732c162d85729c72cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810949b76573ccd9d43af3815299d443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee3d90b49e834fe7797b15195bb494a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd649176cce998793cf5cc256ec786c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d76ac3db5beb244dfeb9f98fb57fbd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a453321ac46221d4133269f40d130e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc585748a5849ab7f10ffb976e467b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5962e5e8dfe549a83d42b762f22fcf2b.png)
A.![]() | B.![]() | C.1 | D.2 |
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2008高三·天津·竞赛
9 . 如图,已知
的三边
的中点分别为
分别是
上的点,并满足
均平分
的周长,
分别是
关于
的对称点,
与
交于点
.若
,则
一定过
的.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/fa90f71b-738f-4f0e-aac3-bbe4d5962201.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746ee1515a178948b04f535705c6f738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0165b2b3ed40201f2054a1a975c683b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd6877751384616819a8ddeef96c4133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0da1f94cd38666cf340b690960b14193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034807c0881957fa19abc980723810bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc0f6aa0b8ec19dde4db21b3d214d0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/6/fa90f71b-738f-4f0e-aac3-bbe4d5962201.png?resizew=151)
A.内心 | B.外心 | C.重心 | D.垂心 |
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