题目内容

什么叫层流、紊流?

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What does the output on this report indicate?() RMAN> report need backup; RMAN retention policy will be applied to the command RMAN retention policy is set to redundancy 1 Report of files with less than 1 redundant backups File #bkps Name 5 0 C:\ORACLE\ORADATA\ORCL\MY_DATA_01.DBF

A. The my_data_01.dbf datafile is corrupted and needs to be restored.
B. The my_data_01.dbf datafile has not yet been backed up. This report does not imply that the data in the datafile can not be recovered.
C. The my_data_01.dbf datafile has not yet been backed up. This report implies that the data in the datafile can not be recovered.
D. The my_data_01.dbf datafile no longer meets the retention criteria for backups.
E. Datafile 5 is missing.

当电源掉电时,计算器保持原计数状态

A. 正确
B. 错误

影响膜质流动性的因素是磷脂分子脂肪酸链的不饱和程度。不饱和程度越高,流动性越(),其原因是()

A. 小,双键多,曲折小
B. 小,分子排列疏松
C. 大,双键多.曲折多
D. 大,分子排列疏松以上均不正确

闻到酸性汗味见于()

A. 风湿热或长期服用水杨酸、阿司匹林等解热镇痛药物的患者
B. 肺脓肿、较长时间使用抗生素的患者
C. 有机磷中毒未及时治疗的患者
D. 肝昏迷未及时治疗的患者
E. 麻风病患者

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