已知字典x={"red":1,"green":2},执行语句x3]="blue"之后,则x的值为______。
选项:
A:
{'red':1 ,3:‘blue’}
B:
{3:‘blue’,‘green’:2}
C:
{'red':1,‘green’:2,‘blue’:3}
D:
{'red':1,‘green’:2,3:‘blue’}
{'red':1 ,3:‘blue’}
{3:‘blue’,‘green’:2}
{'red':1,‘green’:2,‘blue’:3}
{'red':1,‘green’:2,3:‘blue’}
以下文字与答案无关
提示:有些试题内容 显示不完整,文字错误 或者 答案显示错误等问题,这是由于我们在扫描录入过程中 机器识别错误导致,人工逐条矫正总有遗漏,所以恳请 广大网友理解。
'(','1',',','2',')',',',
'H','e','l','l','o']
B:(1,2), 'Hello']
C:输出错误
D:‘(1,2)’, ‘Hello’]
‘-应交增值税’
B:‘应交增值税-’
C:‘交增值税’
D:‘应交增值税’
‘-应交增值税’
B:‘交增值税-’
C:‘交增值税’
D:‘应交增值税’
SELECT * FROM Student WHERE LEFT(姓名,1)=‘张’
B:SELECT * FROM Student WHERE RIGHT(姓名,1)=‘张’
C:SELECT * FROM Student WHERE TRIM(姓名,1)=‘张’
D:SELECT * FROM Student WHERE STR(姓名,1)=‘张’
1
B:{‘b’:2}
C:3
D:2
import http from ‘@ohos.net.http’
B:import http from ‘@ohos.net.https’
C:import request from ‘@ohos.request’
D:import request from ‘@ohos.net.request’
学号LIKE ‘2004%-05’
B:学号= ‘2004%-05’
C:学号LIKE ‘2004_-05’
D:学号= ‘2004_-05’
SELECT price FROM book WHERE book_name = ‘计算机*’
B:SELECT price FROM book WHERE book_name LIKE ‘计算机*’
C:SELECT price FROM book WHERE book_name = ‘计算机%’
D:SELECT price FROM book WHERE book_name LIKE ‘计算机%’
'11'
B:'2'
C:'3'
D:都不是
单选题 (1分) 有关系S(SNO, SNAME, SAGE),C(CNO, CNAME),SC(SNO, CNO, GRADE)。其中SNO是学生号,SNAME是学生姓名,SAGE是学生年龄, CNO是课程号,CNAME是课程名称,GRADE是成绩。要查询选修了“Java程序设计”课的学生姓名,则SQL语句是: SELECT SNAME FROM S,C,SC WHERE子句。 这里的WHERE子句的内容是( )。
选项: A:S.SNO = SC.SNO and C.CNO = SC.CNO and CNAME=‘Java程序设计’
B:CNAME=‘Java程序设计’
C:S.SNO = SC.SNO and CNAME=‘Java程序设计’
D:C.CNO = SC.CNO and CNAME=‘Java程序设计’
<class 'tuple'>
B:<class 'dict'>
C:<class 'set'>
D:<class 'list'>
的值为
p,k]
B:n,p‘]
C:ts,s]
D:t,f]
x1+x2+ x3=3
B:x1+x2+ x3=2
C:x1+x2+ x3=1
D:x1+x2+ x3=0
1
B:3
C:7
D:8
a="1,'a', 2, 'b']"
B:a = {1,'a', 2, 'b']}
C:a = 1,'a', 2, 'b']]
D:a=(1,'a', 2, 'b'])
3
B:4
C:1
D:2
0
B:1
C:-2
D:-3