激光的特性是A．方向性好B．强度高C．单色性好D．相干性好E．以上都是

作者: rantiku 人气: - 评论: 0

问题激光的特性是

选项 A．方向性好 B．强度高 C．单色性好 D．相干性好 E．以上都是

答案 E

解析

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