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22、PowerPoint 2010 幻灯片编辑中,将已插入的视频,设置单击时开始播放的效果,应该进行的操作在__________。
A.“审阅”选项卡中
B.“视频工具播放”选项卡中
C.“开始”选项卡中
D.“格式”选项卡中
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