【单选题】【消耗次数：1】
下列疾病不是由于营养过剩引起的是( )。
①
糖尿病
②
痛风
③
肥胖
④
高胆固醇血症
⑤
佝偻病
参考答案：
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相关题目
【单选题】
佝偻病的发生是由于缺乏（ ）．
①
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②
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③
Normal 0 7.8 磅 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;}维生素Ｃ
④
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随机题目
【单选题】
假设每个售货员可以销售多种商品，则计算每个售货员销售总金额的SQL语句是（ ）。
①
SELECT 售货员编号,商品编号,SUM(金额) FROM 产品ORDER BY金额
②
SELECT 售货员编号,商品编号,SUM(金额) FROM 产品GROUP BY 金额
③
SELECT 售货员编号,商品编号,SUM(金额) FROM 产品 ORDER BY售货员编号
④
SELECT 售货员编号,商品编号,SUM(金额) FROM 产品 GROUP BY 售货员编号
【单选题】
已知SN是一个字符型字段，下列SQL查询语句SELECT SN FROM S WHERE SN LIKE ‘AB％’；的执行结果为( )。
①
找出含有3个字符′AB％′的所有SN字段
②
找出仅含3个字符且前两个字符为′AB′的SN字段
③
找出以字符′AB′开头的所有SN字段
④
找出含有字符′AB′的所有SN字段
【单选题】
设关系数据库中一个表S的结构为：S（SN，CN，grade），其中SN为学生名，CN为课程名，二者均为字符型；grade为成绩，数值型，取值范围0－100。若要更正王二的化学成绩为85分，则可用（ ）。
①
UPDATE S
SET grade＝85
WHERE SN＝’王二’ AND CN＝’化学’
②
UPDATE S
SET grade＝’85’
WHERE SN＝’王二’ AND CN＝’化学’
③
UPDATE grade＝85
WHERE SN＝’王二’ AND CN＝’化学’
④
UPDATE grade＝’85’
WHERE SN＝’王二’ AND CN＝’化学’
【单选题】
学生-课程数据库中，SC表上建立了两个外码约束，被参照表是Student表和Course表，则最适当的说法是( )。
①
Student表中的学生号Sno不能随意取值
②
Course表中的课程号Cno不能随意取值
③
SC表中学生号Sno不能随意取值
④
SC表中学生号Sno、课程号Cno均不能随意取值
【单选题】
已知SN是一个字符型字段，下列SQL查询语句
SELECT SN FROM S WHERE SN LIKE ‘AB％’；的执行结果为( )。
①
找出含有3个字符′AB％′的所有SN字段
②
找出仅含3个字符且前两个字符为′AB′的SN字段
③
找出以字符′AB′开头的所有SN字段
④
找出含有字符′AB′的所有SN字段