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【单选题】
听力原文:M: I can't believe that we're almost out of high school. W: I can't either. What are you going to do after graduation? Go to college? M: Yes, but I haven't decided where to go until now. W: Do you want to go to a big university or a small one? M: I think I'd rather go to a small university, so the classes wouldn't be so large. W: Do you want to go out of the state or just stay here? M: I'd like to stay in the state, so that I will be close to home. W: It sure would be nice to be close enough to come home and visit family on weekends when you want to. Do you like a public or private university? M: Well, I like the atmosphere of a private church-owned school. The students are more serious about school, and there isn't a lot of partying. W: That's true, but private universities are so expensive. How are you going to pay for it? M: I've applied for a scholarship, and my parents have agreed to help me pay for some of the expenses. What about you? What are you going to do next fall? W: I'm going to Oregon State University. M: Oh, I know a lot of kids who've gone there they really liked it. Why did you choose it? W: Well, a lot of my friends are going there, and the school has a good teacher preparation program. You know to be a teacher has been my dream for a long time. M: Yes, and I hear they have a really great basketball team, too. W: Yes. It'll be fun to go to the games. I'm really excited about the social life at college. M: Well, good luck. W: Same to you. See you later. (20)
A.
Go to a small university in the state.
B.
Go to a small university out of the state.
C.
Go to a big university in the state.
D.
Go to a big university out of the state.
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【单选题】依据企业会计准则,下列各项中属于会计政策变更的是( 1)。
A.
本期发生的交易或事项与以前相比具有本质差别而采用新的会计政策
B.
第一次签订建造合同,采用完工百分比法确认收入
C.
对价值为200元的低值易耗品摊销方法由分次摊销法改为一次摊销法
D.
由于持续通货膨胀,企业将存货发出的计价方法Eh先进先出法改为加权平均法
【单选题】下面java中的接口描述正确的是( )
A.
接口可以创建一个对象
B.
接口有构造方法
C.
一个类可以实现多个接口
D.
接口就是抽象类的别名
【单选题】课程表结构如下SC(Sno, Cno, Cname, Grade),其中列Cno和Sno的数据类型均为varchar(20),Cname为nvarchar(20),Grade数据类型为smallint。查询课程号为'001'的学生平均分,对应的SQL语句可以是( )。
A.
SELECT AVG(Grade) FROM SC WHERE Cno= '001';
B.
SELECT AVG(Grade) FROM SC WHERE Cno like '001';
C.
SELECT count(Grade) FROM SC WHERE Cno ='001';
D.
SELECT sum(Grade) FROM SC WHERE Cno= '001';
【简答题】课程表结构如下SC(sno, cno, cname, grade),其中列cno和sno的数据类型均为varchar(20),cname为nvarchar(20),grade数据类型为smallint,查询平均分大于80分且所有课程均及格的学生学号,对应的SQL语句可以是( )。A. select sno from SC group by sno having AVG(grade)>80 and ...
【单选题】5阶无向完全图的边数为()
A.
5
B.
10
C.
15
D.
20
【单选题】课程表结构如下SC(sno, cno, cname, grade),其中列cno和sno的数据类型均为varchar(20),cname为nvarchar(20),grade数据类型为smallint,查询每位学生所有课程的平均分和学号,对应的SQL语句可以是( )。
A.
select sno, AVG(grade) from SC group by sno;
B.
select cno, AVG(grade) from SC group by cno;
C.
select sno, SUM(grade) from SC group by sno;
D.
select sno, min(grade) from SC group by sno;
【单选题】以下对抽象类和接口描述正确的是( )。
A.
接口没有提供构造方法
B.
抽象类解决了Java不允许多继承的问题
C.
抽象类不能实现接口
D.
接口和抽象类都提供了构造方法
【单选题】课程表结构如下SC(sno, cno, cname, grade),其中列cno和sno的数据类型均为varchar(20),grade数据类型为smallint,查询每门课程的平均分,对应的SQL语句可以是( )。
A.
select avg(grade) as 平均分 from SC;
B.
select sum(grade) as 平均分 from SC;
C.
select sno, avg(grade) as 平均分 from SC group by sno;
D.
select cno, avg(grade) as 平均分 from SC group by cno;
【简答题】课程表结构如下SC(sno, cno, cname, grade),其中列cno和sno的数据类型均为varchar(20),grade数据类型为smallint,查询课程号cno为'20180010'的学生的平均分,对应的SQL语句可以是( )。A. select avg(grade) as 平均分 from SC where cno='20180010'; B. select sum(grad...
【多选题】以下关于VLAN接口描述正确的是:( )
A.
Trunk 发送带标签的报文;
B.
一般用于交换机级联端口 , 传递多组 vlan 信息时使用;
C.
Hybrid 端口可以允许多个 VLAN 通过,可以接收和发送多个 VLAN 的报文,可以用于交换机之间连接,也可以用于连接用户的计算机。
D.
Hybrid 端口可以允许多个 VLAN 的报文发送时不打标签,而 Trunk 端口只允许缺省 VLAN 的报文发送时不打标签。
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