In which cases is reference partitioning effective in enhancing performance？（）
A. It is effective only in partition pruning.
B. It is effective only in partitionwise joins provided that the query predicates are different from the partitioning key.
C. It is effective in both partition pruning as well as partitionwise joins provided that the query predicates are identical to the partitioning key.
D. It is effective in both partition pruning as well as partitionwise joins irrespective of whether the query predicates are different from or identical to the partitioning key.
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我是北京某企业职员，打算申请工伤劳动能力鉴定，应该如何办理？需提供哪些资料？
承兑仅适用于商业汇票，是指汇票付款承诺在汇票到期日支付汇票金额并签章的行为。
A. 正确
B. 错误
国家对烟草专卖品的生产、销售、进出口依法专卖管理，并实行烟草专卖许可证制度。
A. 正确
B. 错误
大气稳定度指整层空气的稳定程度，有时也称大气垂直稳定度。以哪种运动来判定（）
A. 以大气的气温垂直加速度运动来判定
B. 以大气的气温垂直速度运动来判定
C. 以大气的气压垂直速度运动来判定
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