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患儿,女,3岁。自幼发现心脏杂音,经常患肺炎,查体胸骨左缘第3~4肋Ⅳ级粗糙收缩期杂音,心电图示左心室及右心房均肥大,X线片示肺血多。 所患疾病可能是

A. 室间隔缺损
B. 房间隔缺损
C. 动脉导管未闭
D. 法洛四联症
E. 肺动脉狭窄

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患儿,女,3岁。自幼发现心脏杂音,经常患肺炎,查体胸骨左缘第3~4肋Ⅳ级粗糙收缩期杂音,心电图示左心室及右心房均肥大,X线片示肺血多。 最常见的并发症

A. 脑出血
B. 脑栓塞
C. 脑脓肿
D. 呼吸衰竭
E. 呼吸道感染

在一个BCNF关系模式中,所有的非主属性对每一个码都是( )。

A. 部分函数依赖
B.平凡函数依赖
C. 传递函数依赖
D. 完全函数依赖

在学生表STUD中,查询既不是信息系’IS’、数学系’MA’,也不是计算机系’CS’的学生的姓名 (XM)和性别(XB)。SD为系名。实现该功能的正确SQL语句是( )。

A. SELECT XM,XB
B. FROM STUD
C. WHERE SD IN (’IS’,’MA’,’CS’);
D. SELECT XM,XB
E. FROM STUD
F. WHERE SDNOTIN (’IS’,’MA’,’CS’);
G. SELECT XM,XB
H. FROM STUD
I. WHERE SD NOT (’IS’,’MA’,’CS’);
J. SELECT XM,XB
K. FROM STUD
L. WHERE SD NOT IN (IS,MA,CS);

We hope that by observing the following points you will enjoy your visit to Christ Church without disturbing the life of the college.* Please obey all notices and do not enter the areas marked Private.* Please do not enter any college rooms.* Please avoid leaving litter (杂物) ; picnicking within the college is not permitted.* Please do not smoke.* Please do not gather so as to obstruct (阻塞) paths or passages, particularly in the Hall.* Please be as quiet as possible, remembering that this is a college where people are working.* In the event of a fire or other danger, or if you hear a fire alarm or warning, please leave the building without delay. At all times please follow the advice of the Custodians (保安人员) who are here to help you.* Closed circuit television surveillance (监视) is in operation. Images are being recorded for purposes of crime prevention and public safety.* Thank you for visiting Christ Church. If you have any comments please write to:The Steward, Christ Church, Oxford OX1 1DP Why is closed circuit television surveillance in operationTo _____________________and ensure public safety.

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