【单选题】Why do you want to buy things in Supermarket?
B.
Because it can kill time.
C.
Because things are in great variety.
【单选题】下面的SQL语句用于在SQL Server的PUBS数据库中查找所有住在California,并且收到的某本书的版税低于30%的第二作者的姓名,与之返回结果相等的SQL语句是( )。 SELECT au_lname, au_fname FROM authors WHERE state=’CA’ AND au_id IN (SELECT au_id FROM titleauthor...
A.
SELECT au_lname, au_fname FROM authors INNER JOIN titleauthor ON authors.au_id= titleauthor.au_id WHERE state=’CA’ AND royaltyper<30 AND au_ord=2
B.
SELECT au_lname, au_fname FROM authors UNION titleauthor ON authors.au_id= titleauthor.au_id WHERE state=’CA’ AND royaltyper<30 AND au_ord=2
C.
SELECT au_lname, au_fname FROM authors OUTTER JOIN titleauthor ON authors.au_id= titleauthor.au_id WHERE state=’CA’ AND royaltyper<30 AND au_ord=2
D.
SELECT au_lname, au_fname FROM authors CROSS JOIN titleauthor ON authors.au_id= titleauthor.au_id WHERE state=’CA’ AND royaltyper<30 AND au_ord=2
【单选题】电算化会计数据处理包括四个基本环节,其中( )是中心环节。
【判断题】在电气化区段清除危石、危树时,应有供电部门人员配合。
【简答题】Why does the author assert that all things American are fascinating to foreigners? A) Because they have gained much publicity through the American media. B) Because they represent the world’s latest f...
【单选题】From the cheers and shouts of _____, I gathered that he was winning the race.
【简答题】进入肝炎病房前,你应该如何穿、脱隔离衣,离开病房时又如何洗手、脱隔离衣。