题型:单选题
难度:0.4
引用次数:5859
题号:12501205
若
,
,且
的绝对值与相反数相等,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668c78d78149e1135c2da4665ff54dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a178e29feea94276dcc46870e8d94da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
A.![]() | B.![]() | C.![]() ![]() | D.2或6 |
更新时间:2021-03-11 08:58:35
|
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较难
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【推荐1】实数a、b在数轴上的位置如图所示,则化简|a-b|﹣a的结果为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/9859b5c4-0bfe-4839-8d3d-441cb2c21876.png?resizew=124)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/3/9859b5c4-0bfe-4839-8d3d-441cb2c21876.png?resizew=124)
A.-2a+b | B.b | C.﹣2a﹣b | D.﹣b |
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【推荐2】已知a与1的和是一个负数,则|a|=( )
A.a | B.﹣a | C.a或﹣a | D.无法确定 |
您最近一年使用:0次
单选题
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较难
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【推荐1】将自然数1,2,3,4,5,6分别标记在6个形状大小质地等完全相同的卡片上,随机打乱之后一一摸出,并将摸出的卡片上的数字分别记为
,
,
,
,
,
,记
,以下3种说法中:①A最小值为3;②A的值一定是奇数;③A化简之后一共有5种不同的结果.说法正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da4cd81500bdb43118150dbdb1541e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf681ef327f7a668e9097a61c7fe3c9.png)
A.3 | B.2 | C.1 | D.0 |
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名校
【推荐2】我们把不超过有理数
的最大整数称为
的整数部分,记作
,又把
称为
的小数部分,记作
,则有
.如:
,
,
.下列说法中正确的有( )个
①
;
②
;
③若
,且
,则
或
;
④方程
的解为
或
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f161c2a3717f1b6c62d0d7dae0b606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dc9cafbab1134e888be3d597750bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3788a125c33eee076151e215a9b02b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5c49c9ece8b1ff795ff55d954982e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/001a899c9fe7bdd1c177c9ad21691c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f56bd362a4772a00ac7c299a5b902c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abece2698a9c18b05334e27b2de10d75.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3480f0aa8085e5802906c5280c3f5109.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0df89bd6f3dc65a99a2383a27845e3aa.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2b8aeb0b19cfad5cfbb3e5e82c0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c01a5bff2b78a44aca2468356e4d301a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e7a8aad8ec96430cf155c583782da6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5942de2e84374d4c6045e2584c71ecb.png)
④方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee879ec35c76eda118be4961285d412c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/439b1e676529f907ef768edb9c61bd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbec2550c93714620eca62a67b52120.png)
A.1 | B.2 | C.3 | D.4 |
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