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1 . 下列等式正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 某海岛核污水中含有多种放射性物质,其中放射性物质
含量非常高,它可以进入生物体内,还可以在体内停留,并引起基因突变,但却难以被清除.现已知
的质量
随时间
(年)的指数衰减规律是:
(其中
为
的初始质量).则当
的质量衰减为最初的
时,所经过的时间约为( )(参考数据:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f22760acaf1716a94a5c110762693e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f031835395b78d5fe11fef5e308e926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf17b7abde13eb5ffdf72b1cc8f763c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf17b7abde13eb5ffdf72b1cc8f763c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35be0ef99c1c71dcc18dd873c7b9deed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e6b153bbcb78cba191bcaef78739cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fb44db1dc864ff4901be1e10da79747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf17b7abde13eb5ffdf72b1cc8f763c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf17b7abde13eb5ffdf72b1cc8f763c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fe26e5673a3af533756977a52122a72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f22760acaf1716a94a5c110762693e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f031835395b78d5fe11fef5e308e926.png)
A.300年 | B.100年 | C.255年 | D.125年 |
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3 . 已知
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85e6e36b4eacd8f400d7898f2025b87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7748fa7bfb3580900db90f00fb8e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c17efe3a9fb355cd5824e1b0621d45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 若实数
,
,
满足
且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6047dd36fc70f41ef7f17889629b3194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845a15858da0a84c74f8b06c332b07c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
A.![]() | B.12 | C.![]() | D.![]() |
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2024-05-30更新
|
541次组卷
|
2卷引用:四川省百师联盟2024届高三二轮复习联考(三)全国卷理科数学试题
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5 . 荀子《劝学》中说:“不积跬步,无以至千里;不积小流,无以成江海.”在“进步率”和“退步率”都是
的前提下,我们可以把
看作是经过365天的“进步值”,
看作是经过365天的“退步值”,则大约经过( )天时,“进步值”大约是“退步值”的100倍(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a317f002fd3ae7f3b041d4078e81fe07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dbeaf307f85cae4479a650a543156c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d2dd0b1b7f9af55c5a285e2bcc0010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5e71d2fe628229ca104e66474cf53b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27d852f0d11bf042115a268d7452d51f.png)
A.100 | B.230 | C.130 | D.365 |
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解题方法
6 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/950eb213a607cd3f0c68a2a356e2d2ed.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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7 . 工厂废气排放前要过滤废气中的污染物再进行排放,废气中污染物含量
(单位:mg/L)与过滤时间
小时的关系为
(
,
均为正的常数).已知前5小时过滤掉了10%污染物,那么当污染物过滤掉50%还需要经过( )(最终结果精确到1h,参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254950320a43fb781c01d5e9991c5b4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef98775e12ea3852135792e34526a519.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/295fbcedb830aa9acb83aef417f07202.png)
A.43h | B.38h | C.33h | D.28h |
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2024-05-15更新
|
543次组卷
|
5卷引用:四川省凉山州2024届高三第三次诊断性检测数学(理)试题
四川省凉山州2024届高三第三次诊断性检测数学(理)试题(已下线)情境7 创新定义命题(已下线)专题05 高二下期末考前必刷卷03--高二期末考点大串讲(人教A版2019)福建省泉州市永春第一中学2024届高三最后一卷数学试卷(已下线)第08讲 函数模型及其应用(五大题型)(讲义)
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8 . 已知
,则正整数
的最小值为( )(参考数据:取
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c14cd968acb37b1cb977230ed012f2b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/769563348a6488d1db86b5b4c7681644.png)
A.8 | B.9 | C.10 | D.11 |
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解题方法
9 . 酒驾是严重危害交通安全的违法行为.为了保障交通安全,根据国家有关规定:
血液中酒精含量达到
的驾驶员即为酒后驾车,
及以上认定为醉酒驾车.假设某驾驶员喝了一定量的酒后,其血液中的酒精含量上升到了
.如果停止喝酒以后,他血液中酒精含量会以每小时
的速度减少,那么他至少经过几个小时才能驾驶?( )(结果取整数,参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a43f02606f0d5d3dbbed19298ed6f01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5ac9b5565bf3b83d09b50a3a2ad39e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f686ea5c620ce9d479fc734a7d0fa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/445ac53d3e15b15b33c229fd69c090f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d960769a0d7509930ca19e8aeeb36814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48bbda2cb2731cd9c80bfddae100f050.png)
A.1 | B.2 | C.3 | D.4 |
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2024-05-07更新
|
956次组卷
|
2卷引用:东北三省四市教研联合体2024届高考模拟(一)数学试卷
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解题方法
10 . 设
,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a525e811ffc32387348f431b04c32225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce243be426caee3afd136c7c47f3e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65e69e7049ce6b415d94a9af6645fe0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fb447eb4db1147639e4f8cb4f3772a3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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