【单选题】大数据的利用过程是
C.
采集(获取) — 导入 / 预处理 — 统计 / 分析 — 挖掘解释可视化
D.
导入 / 预处理 — 分析解释可视化 — 挖掘 — 统计 / 分析
【简答题】Compare several of the key advantages and disadvantages of observation and survey research.
【简答题】Describe the key advantages associated with the corporate form of organization.
【简答题】设光纤的纤芯折射率n1=1.500,包层折射率n2=1.485。求: (1)相对折射率差Δ; (2)数值孔径NA; (3)入射临界角θmax 。
【简答题】The key advantages of fuel cells include raising the __________________ and reducing air pollution.