[单选题]Click the Exhibit button and examine the data in the EMPLOYEES and DEPARTMENTS tables.You want to retrieve all employees, whether or not they have matching departments in the departments table. Which query would you use?()
正确答案 :F
SELECT last_name, department_name FROM employees e LEFT OUTER JOIN departments d ON (e.department_id = d.department_id)
[单选题]患者,女性,60岁,高血压病史10余年,平日血压180/100mmHg左右,3个月前患者生气后突发神志不清,呼之不应,急送至医院,送院途中呕吐两次,均为咖啡色胃内容物,查体:T34.3℃,R24次/分,P61次/分,BP170/90mmHg,中度昏迷,强痛刺激下表现为四肢过伸,双侧瞳孔不等大,双眼向左侧凝视,两侧病理征阳性,心脏查体无异常,腹软。
正确答案 :
[单选题]男性,46岁。乙肝病史15年,2年来出现乏力,腹胀,尿量减少,偶有牙出血和鼻出血。1天前,劳累后突然出现恶心,呕新鲜血含有血块,共约1000ml。查体:BP85/45mmHg,P110次/分,神志淡漠。
正确答案 :
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