下列对演讲设备的描述最完整的是
A.演讲设备包括投影仪、音响、白板、笔记本电脑、麦克风
B.演讲设备包括投影仪、音响、笔记本电脑、麦克风
C.演讲设备包括投影仪、音响、白板、电脑、麦克风
D.演进设备包括投影仪、音响、电脑、麦克风
正确答案是A
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