题目内容：
发球时，发出的球停在网顶或过网后挂在网上，应重发球。
A.正确
B.错误
参考答案：
选择题：发球时，发出的球停在网顶或过网后挂在网上，应重发球。
- 题目分类：慕课
- 题目类型：选择题
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