患儿男,8个月,因“发热、咳嗽2d,伴气促1d”来诊。体温37.0~40.5℃。既往健康,生长发育过程无异常,按时进行预防接种。查体:T39.5℃,P170次/min,R66次/min;烦躁;颈部和躯干部可见猩红热样皮疹;鼻翼扇动,口周发绀,吸气时可见三凹征;双肺可闻中小湿性啰音;心音尚可,HR170次/min,律齐,无杂音;肝肋下1.5cm。诊断考虑最可能的疾病是(提示血常规:Hb105g/L,WBC16.4×10/L,N0.75,L0.20。胸部X线片:右肺中叶大片密度增高阴影,双侧肋膈角锐利清晰。)()
A. 毛细支气管炎
B. 流感嗜血杆菌性肺炎
C. 支气管炎
D. 肺炎支原体肺炎
E. 金黄色葡萄球菌性肺炎
F. 沙眼衣原体肺炎
查看答案
病案分析题(请分析下列病案的证型,辨证分析;并写出治法、主方和用药)患者,男性,57岁,干部。反复发作胸痛,心悸半年,近月来,心悸发作频繁,不能安睡,胸痛虽然持续时间不长,但痛势较剧,痛甚时冷汗出,不能动,并有舌尖发麻、胸部紧闷、头晕眼花等感觉。经某医院作胆固醇、心电图等检查,诊断为冠心病,服双嘧达莫(潘生丁)、硝酸甘油片等药,虽能暂时缓解症状,但仍反复发作。诊见面色紫暗,舌质稍淡,边有瘀斑,苔薄白,脉细涩。
You want to track and store all transactional changes to a table over its lifetime. To accomplish this task, you enabled Flashback Data Archive with the retention of 5 years. After some time, the business requirement changed and you were asked to change the retention from 5 years to 3 years. To accomplish this, you issued the following command: ALTER FLASHBACK ARCHIVE fla1 MODIFY RETENTION 3 YEAR; What is the implication of this command?()
A. The command produces an error because the retention time cannot be reduced.
B. All historical data is retained but the subsequent flashback data archives are maintained for only three years.
C. All historical data is purged and the new flashback data archives are maintained for three years.
D. All historical data older than three years is purged from the flashback archive FLA1.