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【单选题】
按照以下步骤创建Goods表,然后完成选择题 1.在"对象资源浏览中"依次点击数据库>学号数据库>表,然后在"表"上点击鼠标右键,在弹出的快捷菜单中,点击"新建表"。 2.依次输入 列名"g_ID"、数据类型 char(6) ; 列名"g_Name"、数据类型varchar(50); 列名" t_id"、数据类型char(2) 列名"g_price"、数据类型float 3.在t_id上点击右键,在弹出的快捷菜单中选择“关系” 4.在关系对话框中,先点击左下角的“添加”,然后点击表和列规范右侧的按钮 5.按下图所示设置(关系名称任意) 6.点击工具栏上的保存按钮,然后在弹出的窗口输入数据表名"Goods",数据表即创建成功 7.有关外键说法不正确的是________
A.
外键的值可以重复
B.
一个表的外键一定是与其相关连的另一个数据表的主键
C.
一张表可以有多个外键
D.
以上都不对
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举一反三
【简答题】Passage Three:Questions 31 to 35 are based on the following passage.“... We are not about to enter the Information Age but instead are rather well into it.” Present predictions are that by 1990, about...
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【单选题】Duty is an act or a course of action that people _______ you to take to by social customs,law or religion. [     ]
A.
persuade
B.
request
C.
instruct
D.
expect
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【判断题】太阳照到森林里,在地上形成斑斑驳驳的圆形光斑是太阳的虚像
A.
正确
B.
错误
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【单选题】【C15】
A.
As regards to
B.
Regard as
C.
In regards
D.
With regard
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【简答题】[A] activity [B] action [C] act [D] acting
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【单选题】We are offering you firm________ on the same terms and conditions as the previous contract.
A.
as following
B.
as follow
C.
as is following
D.
as follows
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【单选题】一个被测量体系外柱按上一个 U 型压差计 , 出现如图情况 , 说明体系与大气压是( ) 关系
A.
体系＞大气压
B.
体系＜大气压
C.
体系＝大气压
D.
无关系
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【单选题】A I have two friends． They are Tom and Jim． We go to school at seven o'clock． We go home at five in the afternoon． We go to bed at about nine thirty． I have a clock． I put it on the desk． Tom has an o...
A.
an old watch
B.
two friends
C.
a clock
D.
Both B and C
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【单选题】We ___________ on it for many hours, but we have not yet reached any conclusion. A. are being worked B. are working C. have been working D. have been worked
A.
are being worked
B.
are working
C.
have been working
D.
have been worked
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【单选题】【31】
A.
for example
B.
that is
C.
as we know
D.
and so on
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相关题目：
【简答题】Passage Three:Questions 31 to 35 are based on the following passage.“... We are not about to enter the Information Age but instead are rather well into it.” Present predictions are that by 1990, about...
查看完整题目与答案
【单选题】Duty is an act or a course of action that people _______ you to take to by social customs,law or religion. [     ]
A.
persuade
B.
request
C.
instruct
D.
expect
查看完整题目与答案
【判断题】太阳照到森林里,在地上形成斑斑驳驳的圆形光斑是太阳的虚像
A.
正确
B.
错误
查看完整题目与答案
【单选题】【C15】
A.
As regards to
B.
Regard as
C.
In regards
D.
With regard
查看完整题目与答案
【简答题】[A] activity [B] action [C] act [D] acting
查看完整题目与答案
【单选题】We are offering you firm________ on the same terms and conditions as the previous contract.
A.
as following
B.
as follow
C.
as is following
D.
as follows
查看完整题目与答案
【单选题】一个被测量体系外柱按上一个 U 型压差计 , 出现如图情况 , 说明体系与大气压是( ) 关系
A.
体系＞大气压
B.
体系＜大气压
C.
体系＝大气压
D.
无关系
查看完整题目与答案
【单选题】A I have two friends． They are Tom and Jim． We go to school at seven o'clock． We go home at five in the afternoon． We go to bed at about nine thirty． I have a clock． I put it on the desk． Tom has an o...
A.
an old watch
B.
two friends
C.
a clock
D.
Both B and C
查看完整题目与答案
【单选题】We ___________ on it for many hours, but we have not yet reached any conclusion. A. are being worked B. are working C. have been working D. have been worked
A.
are being worked
B.
are working
C.
have been working
D.
have been worked
查看完整题目与答案
【单选题】【31】
A.
for example
B.
that is
C.
as we know
D.
and so on
查看完整题目与答案