患者男性,57岁,右侧胸部不适3天,无发热,无咳嗽、咳痰。CT示右下肺外基底段楔形软组织密度病变,基底与胸膜相连,内可见小透亮区,内侧可见小血管影,考虑()。
A. 肺梗死
B. 周围型肺癌
C. 过敏性肺炎
D. 肺不张
E. 肺结核
查看答案
理想流体在同一水平流管内稳定流动时,有截面大的地方()
A. 流速小、压力大
B. 流速大、压力小
C. 流速小、压力小
D. 流速大、压力大
In your Oracle 10g database , you have scheduled a job to update the optimizer statistics at 05:00 pm every Friday. The job has successfully completed. Which three pieces of information would you check to confirm that the statistics have been collected?()
A. average row size
B. last analyzed date
C. size of table in bytes
D. size of table in database blocks
E. number of free blocks in the free list
F. number of extents present in the table
结合史实分唐前期出现社会经济繁荣的原因,并指出从中得到的启示。