考虑到大规模远距离输电和跨大洲联网的需求，未来（）大型可再生能源基地电力外送和洲际大容量交换通道将主要釆用特高压交直流输电技术。
A. 一极一道
B. 一极两道
C. 两极一道
D. 一极三道
查看答案
Which is a restriction on a list partitioned table？（）
A. You cannot create global range partitioned indexes on the table.
B. The optimizer will not execute partition wise joins on the table’s partitions.
C. You must include at least one element in the value list of each partition of the table, even if that element is the keyword NUL
D. Partition pruning will not occur during query optimizer if a range of values is included in the query predicate.
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