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短时记忆的容量是()。
A、5±2组块
B、7±2组块
C、5±2
D、7+2
Which four actions are possible during an Online Data file Move operation?()
ACreating and dropping tables in the data file being moved
BPerforming file shrink of the data file being moved
CQuerying tables in the data file being moved
DPerforming Block Media Recovery for a data block in the data file being moved
EFlashing back the database
FExecuting DML statements on objects stored in the data file being moved
一般多层框架房屋,侧移主要是由()所引起的,()产生的侧移相对很小,可忽略不计。
代位继承与转继承有哪些区别?
隧道总体技术状况评定等级采用的方法是()
A、加权求和法
B、平均值法
C、几何平均值法
D、取最差部分技术状况等级方法