网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
单选题
In order to remove the carbon deposit from the threaded recess, we can use（）
A
a driver
B
a scraper
C
a tap
D
a file
参考答案
参考解析
解析：
暂无解析
更多 “单选题In order to remove the carbon deposit from the threaded recess, we can use（）A a driverB a scraperC a tapD a file” 相关考题
考题
设有订单表order(其中包含字段：订单号，客户号，职员号，签订日期，金额)，查询2007年所签订单的信息，并按金额降序排序，正确的SQL命令是( )。A．SELECT * FROM order WHERE YEAR(签订日期)=2007 ORDER BY 金额 DESCB．SELECT * FROM order WHILE YEAR(签订日期)=2007 ORDER BY 金额 ASCC．SELECT * FROM order WHERE YEAR(签订日期)=2007 ORDER BY 金额 ASCD．SELECT * FROM order WHILE YEAR(签订日期)=2007 ORDER BY 金额 DESC
考题
The ORDERS table has these columns:ORDER_ID NUMBER(4) NOT NULLCUSTOMER_ID NUMBER(12) NOT NULLORDER_TOTAL NUMBER(10,2)The ORDERS table tracks the Order number, the order total, and the customer to whom the Order belongs.Which two statements retrieve orders with an inclusive total that ranges between 100.00 and 2000.00 dollars? （）A. SELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;B. SELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;C. SELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;D. SELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and = 2000;E. SELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and order_total = 2000;
考题
欲将表“学生”中的信息先按学号升序排序，再按平均成绩升序排列，其正确命令是(45)。A．SELECT * FROM 学生 ORDER BY 学号 ASC，平均成绩 ASCB．SELECT * FROM 学生 ORDER BY 平均成绩 ASC，学号 ASCC．SELECT * FROM 学生 ORDER BY 学号 DESC，平均成绩 DESCD．SELECT * FROM 学生 ORDER BY 平均成绩 DESC，学号 DESC
考题
In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring grooveA.①B.②C.①②D.neither ① nor ②
考题
According to Harry Morrison, businesses .A．will benefit from cutting carbon emissionsB．should buy carbon allowances for shoppersC．are required to make up for their carbon emissionsD．have encouraged shoppers to take their custom elsewhere
考题
In a diesel engine, when refitting piston rings you should______. I. check the ring gap at the smallest diameter of the cylinder II. remove carbon from the ring grooveA.I onlyB.II onlyC.both I and IID.neither I nor II
考题
Evaluate this SQL statement: SELECT e.emp_name, d.dept_name FROM employees e JOIN departments d USING (department_id) WHERE d.department_id NOT IN (10,40) ORSER BY dept_name; The statement fails when executed. Which change fixes the error? （）A、remove the ORDER BY clauseB、remove the table alias prefix from the WHERE clauseC、remove the table alias from the SELECT clauseD、prefix the column in the USING clause with the table aliasE、prefix the column in the ORDER BY clause with the table aliasF、replace the condition "d.department_id NOT IN (10,40)" in the WHERE clause with "d.department_id 10 AND d.department_id 40"
考题
对由SELECT--FROM—WHERE—GROUP--ORDER组成的SQL语句，其在被DBMS处理时，各子句的执行次序为（）A、SELECT—FROM—GROUP—WHERE—ORDERB、FROM--WHERE——GROUP——ORDER——SELECTC、FROM——WHERE——GROUP——SELECT——ORDERD、SELECT——FROM——WHERE——GROUP——ORDER
考题
下面哪条语句可以取出薪水最高的前三个人：（）A、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY ）；B、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY ） WHERE ROWNUM=3；C、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY DESC） WHERE ROWNUM=3；D、SELECT * FROM EMPLOYEES WHERE ROWNUM=3 ORDER BY SALARY DESC；
考题
查询金额最大的那10%订单的信息。正确的SQL语句是（）。A、SELECT * TOP 10 PERCENT FROM 订单B、SELECT TOP 10% * FROM 订单 ORDER BY 金额C、SELEC T* TOP 10 PERCENT FROM 订单 ORDER BY 金额D、SELECT TOP 10 PERCENT * FROM 订单 ORDER BY 金额 DESC
考题
已知数据库的排序规则是默认设置。在northwind数据库中有一个表[orderdetails]，表示所有定单的详情，该表中有一列quantity，表示定单中某产品的数量。你想实现按照产品数量从小到大排序来查询定单，使用orderby子句为（）A、Select * from [order details] Order by quantity descB、Select * from [order details] Order by quantity ascC、Select * from [order details] Order by quantityD、Select * from [order details] Order by desc quantity
考题
A technician receives a new printer for repair and the work order states that when powered on the printer makes a loud noise and will not print. Which of the following actions should the technician take？ （）A、Install new drivers on the computer.B、Install a new ink cartridge.C、Install a print head on the printer.D、Remove the packing tape from the print head.
考题
In Windows XP, how can a user change the programs that run at startup? （）(Select TWO).A、Add or remove programs from the system key of the registry.B、Add or remove programs from the boot.ini file.C、Add or remove programs from the startup folder.D、Run msconfig and configure startup programs.E、Run appstart and configure startup programs.
考题
A system administrator’s daily monitoring has revealed a failing disk drive. The drive that is failing， hdisk0， is a lvm mirrored drive. What is the first step that should be taken in order to physically replace this drive？（）A、Remove the physical volume from the system.B、Remove the physical volume from the volume group.C、Remove the physical partitions from the volume group.D、Remove the logical volume copies from the failing drive.
考题
对于满足SQL92标准的SQL语句： select foo，count（foo）from pokes where foo10group by foo having count （*）5 order by foo 其执行顺序应该是（）。A、FROM-WHERE-GROUP BY-HAVING-SELECT-ORDER BYB、FROM-GROUP BY-WHERE-HAVING-SELECT-ORDER BYC、FROM-WHERE-GROUP BY-HAVING-ORDER BY-SELECTD、FROM-WHERE-ORDER BY-GROUP BY-HAVING-SELECT
考题
Which of the following commands must be issued to remove a stored script from the recovery catalog？（）A、DELETE SCRIPTB、ERASE SCRIPTC、REMOVE SCRIPTD、UNCATALOG SCRIPT
考题
多选题The ORDERS table has these columns: ORDER_ID NUMBER(4) NOT NULL CUSTOMER_ID NUMBER(12) NOT NULL ORDER_TOTAL NUMBER(10,2) The ORDERS table tracks the Order number, the order total, and the customer to whom the Order belongs. Which two statements retrieve orders with an inclusive total that ranges between 100.00 and 2000.00 dollars? （）ASELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;BSELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;CSELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;DSELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and = 2000;ESELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and order_total = 2000;
考题
单选题In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring grooveA
Ⅰ onlyB
Ⅱ onlyC
both Ⅰ and ⅡD
neither Ⅰ nor Ⅱ
考题
单选题A person reports to you with a fishhook in his thumb. To remove it you should（）.A
pull it out with pliersB
cut the skin from around the hookC
push the barb through，cut it off，then remove the hookD
have a surgeon remove it
考题
单选题Heat damage to fuel injection nozzles can be prevented by avoiding （）A
excessive fuel oil temperatureB
long periods of engine overloadC
metallic contact between nozzles and cylinder headsD
hard carbon deposit and varnish on the nozzles
考题
单选题设有订单表order（其中包含字段：订单号，客户号，职员号，签订日期，金额），查询2007年所签订单的信息，并按金额降序排序，正确的SQL命令是（ ）。A
SELECT * FROM order WHERE YEAR（签订日期）=2007 ORDER BY金额DESCB
SELECT * FROM order WHILE YEAR（签订日期）=2007 ORDER BY金额ASCC
SELECT * FROM order WHERE YEAR（签订日期）=2007 ORDER BY金额ASCD
SELECT * FROM order WHILE YEAR（签订日期）=2007 ORDER BY金额DESC
考题
单选题In the two stage flash distilling plant, which of the pumps listed is vented to the shell of the second stage in order to remove vapor from the pump suction?（）A
Condenser circulating water pumpB
Feed-water heater drain pumpC
Distillate pumpD
Air ejector condenser drain pump
考题
单选题In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a （）.A
positive headB
negative suction headC
mechanical sealD
vent valve attached to the casing at the top of the volute
考题
单选题It is necessary to secure the forced ventilation to a compartment where there is a fire to（）.A
allow the exhaust fans to remove smokeB
extinguish the fire by carbon monoxide smotheringC
prevent additional oxygen from reaching the fireD
protect fire fighting personnel from smoke
考题
多选题The ORDERS table has these columns: ORDER_ID NUMBER(4) NOT NULL CUSTOMER_ID NUMBER(12) NOT NULL ORDER_TOTAL NUMBER(10,2) The ORDERS table tracks the Order number, the order total, and the customer to whom the Order belongs. Which two statements retrieve orders with an inclusive total that ranges between 100.00 and 2000.00 dollars? （）ASELECT customer_id, order_id, order_total FROM orders RANGE ON order _ total (100 AND 2000) INCLUSIVE;BSELECT customer_id, order_id, order_total FROM orders HAVING order _ total BETWEEN 100 and 2000;CSELECT customer_id, order_id, order_total FROM orders WHERE order _ total BETWEEN 100 and 2000;DSELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and = 2000;ESELECT customer_id, order_id, order_total FROM orders WHERE order_total= 100 and order_total = 2000;
热门标签
最新试卷
