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搜狐
18 天
如何评估政务小程序开发的ROI?
投资回报率(Return on Investment,ROI)是衡量投资项目收益的重要财务指标,通常表示为收益与投资成本的比例。其计算公式为: ROI = \frac{收益 - 投资成本}{投资成本} \times 100\% 2. ROI评估的重要性 评估政务小程序开发的ROI对政府决策具有重要意义,主要体现在以下 ...
搜狐
19 天
蚂蚁庄园今日答案:一度电能让一只25瓦的灯泡工作多久?令人惊讶 ...
也就是说,25瓦的灯泡每小时需要消耗25瓦特(即0.025千瓦)电力。 接下来,我们可以通过下面的公式来计算: [ ext{使用时间} = \frac{\text{一度电}}{\text{功率(千瓦)}} ] 代入我们的数值: [ ext{使用时间} = \frac{1 ext{ kWh}}{0.025 ext{ kW}} = 40 ext{ 小时} ] 由此可见 ...
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