名校
解题方法
1 . 定义集合
的“长度”是
,其中a,
R.已如集合
,
,且M,N都是集合
的子集,则集合
的“长度”的最小值是_____ ;若
,集合
的“长度”大于
,则n的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3296f5d3fbd7177849bbd7bd30fbd3a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd7701d084d2b153bbea08cfbf63413a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2532b1aa9a6b334d7395fc020bf0a6be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2512da0056b913e36a72419c91a5d8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640f4732df2e4b84c5e98b47e37d4e65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c81919684bc4047d376c7e57dc6c8f1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bc8032a17aee665217899ed88652375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ae18508906c21d3e1199f231b1a9a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eac97e6740365c85ad857aff85cefbe5.png)
您最近一年使用:0次
2 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
______
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
______
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1d2f98caea906d26aee92ea178551a.png)
______
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c839c42ca4cfdd2bbe2f1b5f2666dcf.png)
______
;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0ecd416d6dc3d886b7bf73fc285dde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1d2f98caea906d26aee92ea178551a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4b667701a36dc656ee6d274f625809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c839c42ca4cfdd2bbe2f1b5f2666dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a66becdc090569818d78174d55276b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
3 . 用适当的符号(“
”、“
”、“⫋”、“
”“
”“
”)填空
2______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
______
0_______ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09396ce60d49d7131687cdca993e9cf.png)
0_____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6170ed4a10e57487d525e71610dff82f.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b980d8446f130dfc405c196109e73ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02aa4d15acfc6884e0c41a56450fcaf9.png)
2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad135b14c9dcd83eab6618d7694c7b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9db9373e74ecf5d63ad98afe66aa4ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09396ce60d49d7131687cdca993e9cf.png)
0
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6170ed4a10e57487d525e71610dff82f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b60e6e00d78d7179f6cef907a18d13f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
您最近一年使用:0次
4 . 选择适当的符号(“
”“
”“”“”“
”“
”“
”)填空:
(1)0______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f5e5688b5c7e514ee72597690a7676.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
______
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff7e39b335e3b5250b7f727e16a4a03.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3453bb7d6b4dda65e6e654f2ae0788.png)
______
;
(2)设A是全体正方形组成的集合,B是全体矩形组成的集合,C是全体平行四边形组成的集合,则A______ B,B______ C;
(3)若集合
,
,则A______ C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b980d8446f130dfc405c196109e73ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02aa4d15acfc6884e0c41a56450fcaf9.png)
(1)0
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f5e5688b5c7e514ee72597690a7676.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf3cd55e671f62712cc970c2b9bf475c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff7e39b335e3b5250b7f727e16a4a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d95943237b41092c2e3cfcb941ba68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3453bb7d6b4dda65e6e654f2ae0788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6573758b10abd1d69860267e1580a3.png)
(2)设A是全体正方形组成的集合,B是全体矩形组成的集合,C是全体平行四边形组成的集合,则A
(3)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c6f6ba2d21a9226ad7adca563f37c5.png)
您最近一年使用:0次
2023-10-07更新
|
53次组卷
|
3卷引用:北师大版(2019)必修第一册课本习题第一章1.2 集合的基本关系
2022高一·江苏·专题练习
5 . 判断下列表述是否正确:
(1)
;( )
(2)
;( )
(3)
;( )
(4)
;( )
(5)
;( )
(6)
;( )
(7)
;( )
(8)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
.( )
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec538184bd8d3c44daa125ff84cc742b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00e16c585bf84d772b03e64c33d5c224.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffa77ed1678e5c275f8cb9b8c649124.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1e46247fa97d0f98dfe75663bc72f1.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf82d0306f6f5ce7b8aa3c8b4059e6c.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c596440b19b651cc3f63581c84510e6.png)
(7)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c06978f01170060df1da59a8c5d213fa.png)
(8)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721cc481254f8592c91e9273e7620ef.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
6 . 已知
,
为非空集,
为全集,且
,用适当的符号填空:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
______
; (2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
______
;
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
______
; (4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
______
;
(5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ce9bf72cf6b30c2e14921657459ad.png)
______
; (6)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4109b7e801d42d24f37fc0cfde87aedc.png)
______
;
(7)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7405d9c4183738865f6b14a5b8e97964.png)
____ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e8a0a95931760d0ea46a8366fde2e4.png)
____
; (8)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
____ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb584b83ae783a0ec8a9b4628b7fca3e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e25faf6c06310292eea7b9b03671dd4.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/582ce9bf72cf6b30c2e14921657459ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085353be6adc4ee83749a7d6fe117bf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4109b7e801d42d24f37fc0cfde87aedc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(7)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7405d9c4183738865f6b14a5b8e97964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e8a0a95931760d0ea46a8366fde2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3744e71abf4b43e128eabea9181b712.png)
您最近一年使用:0次
21-22高一·湖南·课后作业
7 . 用符号“
”和“
”填空:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
______ N; (2)1______
; (3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
______ R;
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
______
; (5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3f00a02e931a265f86950296602f0f.png)
______ N; (6)0______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2294c30a485ed48893432b6e091b378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c4f8f0f710572714fcc1da274816be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3f00a02e931a265f86950296602f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
您最近一年使用:0次
20-21高一·全国·课后作业
8 . 选用适当的符号填空:
(1)若集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
______
,
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff7e39b335e3b5250b7f727e16a4a03.png)
______
,
______ ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若集合
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d7a6a36f9d95144ed935abc24e87ed.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2c867310587c3da6c177ef93b8f799.png)
______
;
(3)
是菱形![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
______
是平行四边形
;
是等边三角形}______
是等腰三角形
(1)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ace0f7d64c9c8d08a8dbd5bd2b0f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f39a750433188d64f6b6231c15df4ae3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ff7e39b335e3b5250b7f727e16a4a03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc3a556ae6468cbb64a6553ca8cf051d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d7a6a36f9d95144ed935abc24e87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a837165ca03f9e4ea8964979c95e3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa2c867310587c3da6c177ef93b8f799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2eb12f54c6a9fe0bc6245ade7163d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2eb12f54c6a9fe0bc6245ade7163d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2eb12f54c6a9fe0bc6245ade7163d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2eb12f54c6a9fe0bc6245ade7163d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
9 . 用“
”或“
”填空:
(1)若
,则1___________ A,-1___________ A;
(2)若
,则1___________ B,1.5___________ B;
(3)若
,则0.2___________ C,3___________ C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61abdd93918f775f76e077dc582fc7ac.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb3e08ce57b405e910582b574d68e68.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ac5fe32003ed09017464d51b0518ea.png)
您最近一年使用:0次
20-21高一·江苏·课后作业
10 . 用“
”或“
”填空:
1___________
,-3___________
,0___________
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
___________
,
1___________
,-3___________
,0___________
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
___________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83fa0c19ec5fe6c4e44c4d2120744f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83fa0c19ec5fe6c4e44c4d2120744f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83fa0c19ec5fe6c4e44c4d2120744f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83fa0c19ec5fe6c4e44c4d2120744f6.png)
1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2077e5032491293f8181c4fc3bcf360a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e680c82535270feea54ec5cc81fcc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2077e5032491293f8181c4fc3bcf360a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
您最近一年使用:0次