中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.
圆
与圆
的位置关系为( )
| A: 内切 |
| B: 相交 |
| C: 外切 |
| D: 相离 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+6K6h566X5Lik5ZyG55qE5ZyG5b+D6LedPC9wPg==
- 提示2：PHA+5bCG5ZyG5b+D6Led5LiO5Y2K5b6E55qE5ZKM44CB5beu5q+U6L6D5aSn5bCPPC9wPg==
- 答案：Qg==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.
已知圆C的方程为
，若以直线
上任意一点为圆心，以1为半径的圆与圆C没有公共点，则k的整数值是（ ）
| A: -1 |
| B: 0 |
| C: 1 |
| D: 2 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5oqK5ZyG55qE5pa556iL5YyW5Li65qCH5YeG5pa556iLPC9wPg==
- 提示2：PHA+5ZyG5b+D5Yiw55u057q/55qE6Led56a7PC9wPg==
- 提示3：PHA+55S75Zu+5YiG5p6QPC9wPg==
- 提示4：PHA+5YiX5Ye65LiN562J5byP5bm25rGC6KejPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.
若圆
与圆
的公共弦长为
，则
的值为（ ）
| A:
|
| B: 2 |
| C: -2 |
| D: 无解 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5Lik5ZyG55u45YeP5Y+v5b6X5YWs5YWx5bym5omA5Zyo55u057q/55qE5pa556iLPC9wPg==
- 提示2：PHA+55S75Ye65Zu+5b2iPC9wPg==
- 提示3：PHA+5Z6C5b6E5a6a55CGPC9wPg==
- 提示4：PHA+5qC55o2u5Yu+6IKh5a6a55CG5YiX5Ye65pa556iL5bm25rGC6KejPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.
设圆O1和圆O2是两个定圆，动圆P与这两个定圆都相切，则圆P的圆心轨迹不可能是（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+55u45YiH5YiG5Li65YaF5YiH5ZKM5aSW5YiHPC9wPg==
- 提示2：PHA+5YiG5oOF5Ya16K6o6K66PC9wPg==
- 提示3：PHA+5oqK5ZyG5LiO5ZyG55qE5L2N572u5YWz57O76L2s5YyW5Li65Y2K5b6E5LiO5ZyG5b+D6Led55qE5YWz57O7PC9wPg==
- 提示4：PHA+57u85ZCI5ZyG6ZSl5puy57q/55+l6K+GPC9wPg==
- 答案：QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.
已知动圆P过定点A（-3，0），并且在定圆B：（x-3）2+y2=64的内部与其相内切，求动圆圆心P的轨迹方程为（ ）
| A:
|
| B:
|
| C:
|
| D:
|
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+5rOo5oSP5YWz6ZSu6K+N4oCc5Zyo5YaF6YOo4oCdPC9wPg==
- 提示2：PHA+5Lik5ZyG55u45YiH77yM5ZyG5b+D6Led5LiO5Y2K5b6E55qE5YWz57O7PC9wPg==
- 提示3：PHA+55S75Zu+5YiG5p6Q77yM5Yiw5Lik5Liq5a6a54K555qE6Led56a75LmL5ZKM5Li65Li65a6a5YC8PC9wPg==
- 提示4：PHA+5aSN5ZCI5qSt5ZyG5a6a5LmJPC9wPg==
- 答案：Qg==
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
