皮皮学，免费搜题
登录
搜题
【单选题】
以下2题基于如下的两个关系： 执行SQL语句：SELECT*FROM R WHERE sno IN (SELECT sno FROM S WHERE cno=“c1”)的结果中的元数和分别( )。
A.
6，9
B.
3，2
C.
5，3
D.
3，3
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
.
..
皮皮学刷刷变学霸
举一反三
【单选题】Sam often ____ his room on Sundays. Look! He ______it now. [     ]
A.
cleans; cleans
B.
cleans; is cleaning
C.
is cleaning; cleans
D.
is cleaning; is cleaning
查看完整题目与答案
【单选题】I am going to _________ the house. [     ]
A.
 cleaned
B.
 clean
C.
 cleans
查看完整题目与答案
【简答题】Mr. Chen lost a lot of money in his business.__________. [A] So did he [B] So he did [C] So was he [D] So he was
查看完整题目与答案
【简答题】学校打算成立一个奖学金，每年发放一次，奖励给学校学习最好的一名学生５００００元，奖学金的基金保存在银行，银行一年的定期存款利率为 ２％。问学校要投资多少钱作为奖励基金?
查看完整题目与答案
【单选题】未曾接种卡介苗的3岁以下儿童结核菌素试验阳性，提示（ ）
A.
机体反应性差
B.
需接种卡介苗
C.
患有活动性结核病
D.
曾有结核菌感染
E.
严重营养不良
查看完整题目与答案
【单选题】_______all his efforts he failed, he was so upset about himself that he felt like crying.
A.
So long as
B.
In terms of
C.
In spite of
D.
regardless of
查看完整题目与答案
【简答题】I hope the weather　　by this afternoon,because we want to go out.A．cleans upB．cleans outC．clears upD．I hope the weather____ by this afternoon,because we want to go out. A．cleans up B．cleans out C．clear...
查看完整题目与答案
【单选题】---Who cleans the room every morning? --Jimmy ____.
A.
cleans
B.
does
C.
is cleaning
查看完整题目与答案
【简答题】中国制造平台的分析? 交易模式(零售还是批发,在线交易还是信息撮合) 平台类别(第三方还是自营) 产品类别(综合还是垂直) 主要市场(面对的主要客户群体)
查看完整题目与答案
【单选题】－David has made up his mind to continue with his studies. －_______ and _______.
A.
So he has; so have I
B.
So has he; so have I
C.
So he has; so I have
D.
So has he; so I have
查看完整题目与答案
相关题目：
【单选题】Sam often ____ his room on Sundays. Look! He ______it now. [     ]
A.
cleans; cleans
B.
cleans; is cleaning
C.
is cleaning; cleans
D.
is cleaning; is cleaning
查看完整题目与答案
【单选题】I am going to _________ the house. [     ]
A.
 cleaned
B.
 clean
C.
 cleans
查看完整题目与答案
【简答题】Mr. Chen lost a lot of money in his business.__________. [A] So did he [B] So he did [C] So was he [D] So he was
查看完整题目与答案
【简答题】学校打算成立一个奖学金，每年发放一次，奖励给学校学习最好的一名学生５００００元，奖学金的基金保存在银行，银行一年的定期存款利率为 ２％。问学校要投资多少钱作为奖励基金?
查看完整题目与答案
【单选题】未曾接种卡介苗的3岁以下儿童结核菌素试验阳性，提示（ ）
A.
机体反应性差
B.
需接种卡介苗
C.
患有活动性结核病
D.
曾有结核菌感染
E.
严重营养不良
查看完整题目与答案
【单选题】_______all his efforts he failed, he was so upset about himself that he felt like crying.
A.
So long as
B.
In terms of
C.
In spite of
D.
regardless of
查看完整题目与答案
【简答题】I hope the weather　　by this afternoon,because we want to go out.A．cleans upB．cleans outC．clears upD．I hope the weather____ by this afternoon,because we want to go out. A．cleans up B．cleans out C．clear...
查看完整题目与答案
【单选题】---Who cleans the room every morning? --Jimmy ____.
A.
cleans
B.
does
C.
is cleaning
查看完整题目与答案
【简答题】中国制造平台的分析? 交易模式(零售还是批发,在线交易还是信息撮合) 平台类别(第三方还是自营) 产品类别(综合还是垂直) 主要市场(面对的主要客户群体)
查看完整题目与答案
【单选题】－David has made up his mind to continue with his studies. －_______ and _______.
A.
So he has; so have I
B.
So has he; so have I
C.
So he has; so I have
D.
So has he; so I have
查看完整题目与答案