试说明引起进程创建的主要事件.

802.11协议簇定义了多种WLAN接入标准，目前采用最为广泛的标准是什么？

OLELINKS命令的功能有（）。

A、打断OLE对象的链接

B、将嵌入的对象改为链接的OLE对象

C、更改OLE对象

D、删除OLE对象

The EMP table has these columns: ENAME VARCHAR2(35) SALARY NUMBER(8,2) HIRE_DATE DATE Management wants a list of names of employees who have been with the company for more than five years. Which SQL statement displays the required results?（）

A、SELECT ENAME FROM EMP WHERE SYSDATE-HIRE_DATE >5;

B、SELECT ENAME FROM EMP WHERE HIRE_DATE-SYSDATE >5;

C、SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)/365 >5;

D、SELECT ENAME FROM EMP WHERE (SYSDATE_HIRE_DATE)*/365 >5;

在WinXP下，下列哪一种常常被保留在计算机的当前系统配置中？（）

A、创建垃圾文件处理的DrWatson

B、备份所有系统文件信息的MSCONFIG

C、创建系统恢复断点的SystemRestore

D、穿件设置备份的文件尺寸和设置传输尺寸

The ORDERS table has these columns: 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?（）

SELECT customer_id, order_id, order_total FROM orders RANGE ON order_total (100 AND 2000) INCLUSIVE;

SELECT customer_id, order_id, order_total FROM orders HAVING order_total BETWEEN 100 and 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order_total BETWEEN 100 and 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order_total >= 100 and <= 2000;

SELECT customer_id, order_id, order_total FROM orders WHERE order_total >= 100 and order_total <= 2000;