ID与class的区别()正确。A、ID具有惟一性B、class具有唯一性C、ID与class没有区别D、他们两个一样
ID与class的区别()正确。
- A、ID具有惟一性
- B、class具有唯一性
- C、ID与class没有区别
- D、他们两个一样
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