名校
1 . 中国茶文化博大精深,茶水的口感与茶叶类型和水温经有关研究可知:在室温25℃下,某种绿茶用85℃的水泡制,经过
后茶水的温度为
,且
,当茶水温度降至70℃时,此时茶水泡制时间大约为( )(结果保留整数,参考数据:
,
,
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4fe963f369369be8f2005981446cf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2639cc42415e12d22b381cc0d90d7891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e24436fc704a8bb4911debff6d00f12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0591d9f78b4f4f78c5bd6baaa602ae0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289ad328bffb5f497153dc0e59939257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2d5842f3635bc244ba022cfb423286.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 酒驾新规来了,2024年3月1日起实施,新国标将酒驾的上限从
降低到了
,也就是说,只要驾驶员血液中酒精含量超过了
,就属于违法行为.某人饮酒后,体内血液酒精含量迅速上升到
,然后血液酒精含量会以每小时
的速度减少,则按照新规他至少经过__________ 小时后才能开车.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a90d1feee12c646dda31287462493f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402aba6e0fbba6aaa9f37378158dcdf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402aba6e0fbba6aaa9f37378158dcdf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/694b54ce3e551124f227765ef51bb818.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f9fd62e62750b30638385031737f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8f5b560c5cea567a5e5c3462085b43.png)
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3 . 计算:
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2024-02-12更新
|
323次组卷
|
2卷引用:湖北省新高考联考协作体2023-2024学年高一上学期期末考试数学试卷
名校
4 . 已知
,若
,则
所有可能的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21493f5f90ecae141aca4e6d8fdffb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9167964325bb3cde80320358e3198aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.-1 | B.![]() | C.1 | D.![]() |
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2024-02-05更新
|
416次组卷
|
7卷引用:湖北省黄冈大光华高级中学2023-2024学年高一下学期第二次半月考数学试卷
5 . 计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26c78de7c4943f976b5ae37e881d568a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b58f2385e82248204c1448cd26b73f8.png)
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2024-01-25更新
|
490次组卷
|
2卷引用:湖北省部分学校2023-2024学年高一上学期期末数学试题
名校
6 . (1)计算:
.
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0ba3237bac78776b6be5b8242faca9.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bbe7ea044718fb7c2c7774f89bc5d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b98d16854587157b6d6fd00a754f69.png)
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7 . 升温系数是衡量空调制热效果好坏的主要依据之一,把物体放在制热空调的房间里升温,如果物体初始温度为
,空气的温度为
,
小时后物体的温度
可由公式
求得,其中
是一个随着物体与空气的接触状况而定的升温系数.现有A、B两个物体放在空气中升温,已知两物体的初始温度相同,升温2小时后,A、B两个物体的温度分别为
、
,假设A、B两个物体的升温系数分别为
、
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f64fa38725c136504f723019a18dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4438bae1705c0f26beddf41322c087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b344bc91733e1824b4d90036e360d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24464a50d077f18190cc14c2af4a2bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd605e2002a46acdfcc09e11e8aa418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8605ae9897d5d6f0679b4aa80e014bda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b3e87e9bb00d9ba09cb5660aebd76f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 设
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7147d55fc79c193a0b95d2d646fa42ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4371aa3a6bd4b849ea62d211b5505ca.png)
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9 . (1)求值:
;
(2)求值:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6c88ecd2d98e05d0c960fdda43f738b.png)
(2)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0c5f43716d2b0a518670a1f6fdfb18.png)
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10 . 当强度为
的声音对应的等级为
分贝时,有
(其中
为常数),某挖掘机的声音约为100分贝,普通室内谈话的声音约为50分贝,则该挖掘机的声音强度与普通室内谈话的声音强度的比值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dd550850cd04f224166dccf8e6c325a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7356ec98b600ece41f3a6b4bc26a7d59.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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