名校
1 . 设实数
.给出如下两个命题,则( ).
①存在x使得
,
,
,
按某种顺序可组成等差数列;
②存在x使得
,
,
,
按某种顺序可组成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77ce9ca93a0634c6302d116bf36439c.png)
①存在x使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48345d239aaf8e9ca1ff2846c08a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db91bb3be9e2b6ad567774e3699758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada1a099b4cb4863ef1a94927c221ff8.png)
②存在x使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a48345d239aaf8e9ca1ff2846c08a99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66db91bb3be9e2b6ad567774e3699758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada1a099b4cb4863ef1a94927c221ff8.png)
A.①真②真 | B.①真②假 | C.①假②真 | D.①假②假 |
您最近一年使用:0次
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2 . 阻尼器是一种以提供运动的阻力,从而达到减振效果的专业工程装置.深圳第一高楼平安金融中心的阻尼器减震装置,是亚洲最大的阻尼器,被称为“镇楼神器”.由物理学知识可知,某阻尼器模型的运动过程可近似为单摆运动,其离开平衡位置的位移s(cm)和时间t(s)的函数关系式为
,其中
,若该阻尼器模型在摆动过程中连续三次位移为
的时间分别为
,
,
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238e8e6017e094fe856cf88bb5e0b855.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7ce2a7d0e2081049c1eed288b0ca04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c7eb49a823f757461cd5260757b088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd84a8f95166367063218ee03ffd5a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db31d2bbc9b044646fd026f239e7b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45c5e91e8ce920cd8d44e43068c411e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9448bf1d6136b3a108e7ea60506ad39.png)
A.![]() | B.π | C.![]() | D.2π |
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2022-02-27更新
|
4428次组卷
|
13卷引用:上海市华东师范大学第二附属中学2021-2022学年高一下学期期中数学试题
(已下线)上海市华东师范大学第二附属中学2021-2022学年高一下学期期中数学试题广东省深圳市2022届高三下学期一模数学试题重庆市第八中学2022届高三下学期调研检测(四)数学试题(已下线)三轮冲刺卷01-【赢在高考·黄金20卷】备战2022年高考数学模拟卷(新高考专用)辽宁省大连育明高级中学2022届高三4月线上模拟测试数学试卷(已下线)专题11 三角函数的图象与性质-2022届高考数学一模试题分类汇编(新高考卷)(已下线)数学-2022年高考押题预测卷02(江苏专用)2023版 湘教版(2019) 必修第一册 突围者 第5章 第五节 三角函数模型的简单应用苏教版(2019) 必修第一册 突围者 第7章 第四节 三角函数的应用上海市宜川中学2022-2023学年高一下学期期中数学试题5.7 三角函数的应用练习(已下线)专题09 三角恒等变换、函数y=Asin(ωx+φ)及三角函数应用1--期末复习重难培优与单元检测(人教A版2019)上海市南汇中学2022-2023学年高一下学期期中考试数学试卷
名校
解题方法
3 . 如图,在
中,
,
,
,
,现将
分别以
、
、
所在的直线为轴旋转一周,设所得三个旋转体的体积依次为
、
、
.
![](https://img.xkw.com/dksih/QBM/2021/12/10/2869458508185600/2870955392499712/STEM/a41567ce3760447d965dba8dcce0f658.png?resizew=238)
(1)若
,
,
,求以
为轴旋转一周所得几何体的表面积;
(2)求
;(用
、
、
表示)
(3)若
,并令
,将
表示为
的函数,写出这个函数的定义域并求该函数的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e781a2489271bfd1597cba1bb6f5887.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df81cda12d7601d58b1d9c7c180c4d66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c884a45b56bc34d79273b067c1520b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16ee2c2082e35f409e2a5280a7ed34c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3411c87c90bd10bbadd9201630bf45f4.png)
![](https://img.xkw.com/dksih/QBM/2021/12/10/2869458508185600/2870955392499712/STEM/a41567ce3760447d965dba8dcce0f658.png?resizew=238)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae7888d643678ea18f83f3237732052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4db165034dc0d4362d6dfe7725e287b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a24d333fbac6a24e949408643f62836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291de1005faf306e4e8eab5c8c75c33f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2021-12-12更新
|
293次组卷
|
2卷引用:上海市洋泾中学2021-2022学年高二上学期12月月考数学试题
名校
4 . 2021年10月13日第18号台风“圆规”在海南某地登陆,最大风力达到12级.路边一棵参天大树在树干某点B处被台风折断且形成120°角,树尖C着地处与树根A相距10米,树根与树尖着地处恰好在路的两侧,设
(A,B,C三点所在平面与地面垂直,树干粗度忽略不计)
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842828345049088/2845467378778112/STEM/86b9288b228c43e1b2e15b2b6a95baac.png?resizew=346)
(1)若
,求折断前树的高度(结果保留一位小数)
(2)问一辆宽2米,高2.5米的救援车能否从此处通过?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30e586a8505faad251cc182676e0390.png)
![](https://img.xkw.com/dksih/QBM/2021/11/2/2842828345049088/2845467378778112/STEM/86b9288b228c43e1b2e15b2b6a95baac.png?resizew=346)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42206793edde00d2d43cd07adf78366.png)
(2)问一辆宽2米,高2.5米的救援车能否从此处通过?并说明理由.
您最近一年使用:0次
2021-11-06更新
|
494次组卷
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4卷引用:上海市进才中学2023届高三上学期12月月考数学试题
5 . 空间中A,B,C,D四点任意两点间距离都等于a,E为
中点,在由A,B,C,D确定的四个等边三角形中,求与
异面的三角形中线与
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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6 . 函数
,且
,若任意
,
、
、
都能构成某个三角形的三条边,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f506bdd761f527018046c720fca92a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3ac98c53999e2a492366cfb47d0a14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77bab0f04e7a2c3e385dd7c1ec1b85f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc9769116ec47353514e6b7fb7b17216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/542893790445d6d888d9ff91fd215c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1e5fb2d54a62f243bd5936a3f60386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/628560d39eeb0339fa00c9c15ab2c095.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7 . 甲船在距离
港口
海里并在南偏西
方向的
处驻留等候进港,乙船在
港口南偏东
方向的
处沿直线行驶入港,甲、乙两船距离为
海里.乙船的速度为每小时
海里,经过
分钟航行到
处,求此时甲、乙两船相距多少海里?甲在乙的什么方向?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f9c270c34c12a3253fcb14a70255cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5328421f88e455d62909e5166122633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c423cfa71956862edbed10a5ba12d0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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2021-07-25更新
|
340次组卷
|
3卷引用:上海市川沙中学2021-2022学年高一下学期3月月考数学试题
20-21高一下·上海浦东新·期中
名校
8 . 如图,
,
,
,
四个小朋友在草坪上游戏,根据游戏规则,
,
,
三人围成一个三角形,如
,
,
三人共线,
在
,
两人之间,
,
两人相距10米,
,
两人相距
米,
与
垂直.
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383313743872/2763299249856512/STEM/b241bfe3395c425fa3b8caf0782a788a.png?resizew=298)
(1)当
米时,此时
看
,
视角(即
)是
看
,
视角(即
)的2倍,求
的值;
(2)当
米时,求
看
,
两人视角(即
)的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2021/5/15/2721383313743872/2763299249856512/STEM/b241bfe3395c425fa3b8caf0782a788a.png?resizew=298)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aab883dc8dbf0075511c34dcea41ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7951aa8045fd2e3ef93e098de17f93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
您最近一年使用:0次
2021·上海浦东新·三模
名校
9 . 某工厂承接制作各种弯管的业务,其中一类弯管由两节圆管组成,且两节圆管是形状、大小均相同的斜截圆柱,其尺寸如图1所示(单位:
),其中斜截面与底面所成的角为
,将其中一个斜截圆柱的侧面沿
剪开并摊平,可以证明由截口展开而成的曲线
是函数
的图像,其中
,
,如图2所示.
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725319832076288/2730995936878592/STEM/306e80d3-1869-484b-b0c3-2bec5b669829.png?resizew=228)
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725319832076288/2730995936878592/STEM/6a824180-fff5-4dc0-822f-7fb64b201efd.png?resizew=240)
(1)若
,求
的解析式;
(2)已知函数
的图像与x轴围成区域的面积可由公式
计算,若制作该种该类弯管的一截圆管所用材料面积(即斜截圆柱的侧面积)等于与之底面相同且高为
的圆柱的面积,求
的值(结果精确到
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e58750ec6571eaa9f2ac3ca6f0a6ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4a63412a8e10dca8d002978e17c45a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2480f87a11c4cd450bc9454ea7276722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725319832076288/2730995936878592/STEM/306e80d3-1869-484b-b0c3-2bec5b669829.png?resizew=228)
![](https://img.xkw.com/dksih/QBM/2021/5/20/2725319832076288/2730995936878592/STEM/6a824180-fff5-4dc0-822f-7fb64b201efd.png?resizew=240)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6e2e859e649b43a21b623f63472122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58a22ac4aca667f4363d3526feb8f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18703d241f6fe0a0dedcc815603322fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1008a3fc217ce647e16fa09e42ceadb1.png)
您最近一年使用:0次
名校
解题方法
10 . 如图某公园有一块直角三角形
的空地,其中
,
,
长
千米,现要在空地上围出一块正三角形区域
建文化景观区,其中
、
、
分别在
、
、
上.设
.
(1)若
,求
的边长;
(2)当
多大时,
的边长最小?并求出最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13ba5383e768dc86e1bfd79c10f96f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed0c25b0cde4d101058efe70766d25cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6818a6807251bee6fb3cc68b4ec473cb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1f08c7640e62e8717abf4d44a6c83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
您最近一年使用:0次
2021-05-10更新
|
1580次组卷
|
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