A customer opened a ticket with the help desk two days ago to report that their computer ismaking a strange loud noise. Which of the following should the technician do FIRST after arriving at the site?（）A、Ask another technician who has worked with this co

题目

A customer opened a ticket with the help desk two days ago to report that their computer ismaking a strange loud noise. Which of the following should the technician do FIRST after arriving at the site?（）

A、Ask another technician who has worked with this computer previously to learn about any other prior issues.
B、Ask the customer open-ended questions to attempt to narrow down the issue, then repeat the issue to the customer for validation.
C、Ask the customer close-ended questions to attempt to narrow down the issue while not using technical jargon to avoid overwhelming the customer.
D、Run preliminary diagnostic tests to narrow down the issue and update the status of the trouble ticket then ask the customer about any changes they have made to the computer.

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第1题：

求每个终点的平均票价的SQL语句是

A．SELECT终点，avg(票价)FROM ticket GROUP BY票价

B．SELECT终点，avg(票价)FROM ticket ORDER BY票价

C．SELECT终点，avg(票价)FROM ticket ORDER BY终点

D．SELECT终点，avg(票价)FROM ticket GROUP BY终点

正确答案：D
解析：根据题目的要求，求每个终点的平均票价，则按不同的终点分组查询，用AVG()函数计算每组的平均票价值，故正确的SQL语句应该是： SELECT终点，avg(票价)FROM ticket GROUP BY终点

第2题：

The ticket to know-it-all boy is punched "lean".()

参考答案：正确

第3题：

求每个终点的平均票价的SQL语句是A）SELECT终点，avg（票价）FROM ticket GROUP BY票价B）SELECT终点，avg（票价）FROM ticket ORDER BY票价C）SELECT终点，avg（票价）FROM ticket ORDER BY终点D）SELECT终点，avg（票价）FROM ticket GROUP BY终点

正确答案：D
根据题目的要求，求每个终点的平均票价，则按不同的终点分组查询，用AVGQ函数计算每组的平均票价值，故正确的SQL语句应该是：
SELECT 终点，avg（票价）FROM ticket GROUP BY 终点
故选项D为正确答案。

第4题：

An air ticket is only ()for the passenger whose name appears on the ticket.

A.transferable

B.untransferable

C.valid

D.invalid

正确答案：C

第5题：

阅读以下说明和关系表，回答问题1-2，将解答填入对应的解答栏内。

[说明]

下图是飞机票预定的数据库，售票员的顾客编号是指每个售票员自己接收过哪些顾客的订单，用顾客编号来表示。

请用SQL语句来建立这三个基本表：飞机票Ticket、售票员Seller和顾客Customer(请注意数据类型的选择)其中各表属性如下：

Ticket：Tno，Tflidltno，Tdate，Tseat，TPrice，Tdest，Tdepart

Seller：Sno，Sname，Ssex，Scustomerno

Customer：Cno，Cname，Caddr，Cflightno，Cdate

正确答案：CREATE TABLE Ticket( Tno int Tflightno int Tdate date Tseat int Tprice float Tdest char(20 ) Tdepart char( 20) ); CREATE TABLE Seller( Sno int Sname char(20) Ssex char( 2) Scustomemo iht ); CREATE TABLE Customer( Cno int Cname int Caddr char(20) Cflightno int Cdate date );
CREATE TABLE Ticket( Tno int, Tflightno int, Tdate date, Tseat int, Tprice float, Tdest char(20 ), Tdepart char( 20), ); CREATE TABLE Seller( Sno int, Sname char(20), Ssex char( 2), Scustomemo iht , ); CREATE TABLE Customer( Cno int, Cname int, Caddr char(20), Cflightno int, Cdate date );

第6题：

The ticket to Billy is punched "belief".()

参考答案：错误

第7题：

“Was the park ________ yesterday?” “Yes, It ________ at nine in the morning”

A.opened…open

B.open…was open

C.open…opened

D.opened…opened

参考答案：C

第8题：

在表ticket中查询所有票价小于100元的车次、始发站和终点信息的命令是A）SELECT *FROM ticket WHERE票价＜100B）SELECT车次、始发站、终点FROM ticket WHERE票价>100C）SELECT车次、始发站、终点FROM ticket WHERE票价<100D）SELECT*FROM ticket WHERE票价＞100

正确答案：C
本题考查条件查询语句的书写。SQL的语法格式是：
　　SELECT<目标字段达式> FROM表名＞
所以在表ticket中查询所有票价小于100元的车次、始发站和终点信息的命令是SELECT车次、始发站、终点FROM ticket WHERE票价<100,故选项C为正确答案。

第9题：

What is the effect of specifying the "ENABLE PLUGGABLE DATABASE" clause in a "CREATEDATABASE” statement?()

A. It will create a multitenant container database (CDB) with only the root opened.

B. It will create a CDB with root opened and seed read only.

C. It will create a CDB with root and seed opened and one PDB mounted.

D. It will create a CDB that must be plugged into an existing cdb.

E. It will create a CDB with root opened and seed mounted.

参考答案：B

第10题：

A. Ask another technician who has worked with this computer previously to learn about any other prior issues.

B. Ask the customer open-ended questions to attempt to narrow down the issue, then repeat the issue to the customer for validation.

C. Ask the customer close-ended questions to attempt to narrow down the issue while not using technical jargon to avoid overwhelming the customer.

D. Run preliminary diagnostic tests to narrow down the issue and update the status of the trouble ticket then ask the customer about any changes they have made to the computer.

参考答案：B

A customer opened a ticket with

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