什么是系统测试？测试的目的是什么？哪些人员需要参与系统测试？
参考答案：
系统测试是将已经确认的软件、计算机硬件、外设、网络等其他元素结合在一起，进行信息系统的各种组装测试和确认测试。
测试是系统软件质量保证的关键因素，代表了分析、设计和编码的最终检验。测试的目的在于：①测试是指“用意在发现错误而执行一个程序的过程”；②一个好的测试用例是指这个测试用例有很高的概率可以发现一个尚未发现的错误；③一个成功的测试是指它成功发现了一个尚未发现的错误。管理人员、系统操作人员、系统维护人员等需要参与系统测试。
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| Most people who work in London get a break of about an hour for lunch. 1 they mostly live too far from home to go back there 2 lunch, they have to 3 other arrangements for their midday meal. Many large companies have a canteen (自助食堂) for their employees. In 4 canteens the food served is simple but 5 , and there is some 6 of choice. But the number of dishes 7 usually small. The employees themselves fetch their dishes 8 a counter at which they are 9 . There they can find a tray on 10 to carry their knives, forks, spoons, plates, cups, saucers, 11 , of course, their food. A meal in a canteen is inexpensive and may 12 of soup, fish and chips or meat and two vegetables, 13 fruit or pudding of some 14 as dessert. Some companies that do not run a canteen 15 their staff with luncheon-vouchers (午餐券), which many restaurants will accept in 16 of money. As there are so many people 17 work in London, there are numerous cafes and restaurants in every area that is not purely residential. A meal 18 cost anything from a modest sum to quite a few pounds, 19 on the restaurant and the food chosen. 20 , one can generally get a meal, or at least a snack, in a pub. In recent years there has also been a big increase in the number of 'take-away' food shops of all kinds. | ||||
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