某夏热冬冷地区办公楼,地板面积20m2,窗户面积6m2,可开启的部分应是()m2。
A. 1.0
B. 1.2
C. 1.5
D. 1.8
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Which RMAN backup command is used to create the block-change tracking file?()
A. alter database create block change tracking file
B. alter database enable block change file
C. alter database enable block change tracking using file ,/ora01/opt/ block_change_tracking.fil
D. alter system enable block change tracking using file ’/ora01/opt/block_ change_tracking.fil’
E. alter system block change tracking o
血清中AST/ALT参考值约为()
A. 1.5
B. 2
C. 1.15
D. 3
E. 3.5