供电可靠率(计入所有对用户的停电影响)含义:在统计期间内,对用户()总小时数与统计期间小时数的比值
A、供电时间
B、有效供电时间
C、持续供电
参考答案:B
根据句意和首字母提示填空,完成下列句子。
1. —How o_____ does your mother shop?
—Twice a week.
2. I also like English. But math is his f _____ subject.
3. Some children often surf the I_____ with the help of their parents.
4. We u _____ play soccer on weekdays.
5. A _____ for him, he is nothing but a dog. Don't be angry with him.
6. Do you know the r_____ of the football match?
7. To go to bed early and to get up early is a healthy l _____ .
8. Her uncle n _____ watches football match. He doesn’t like football at all.
9. —What is your favorite TV p_____ ?
—Sports news.
10. —How many t _____ did you go to Beijing?
—Only once.
软件测试是软件质量保证的必要和重要环节,下述哪些属于软件测试的固有内容 Ⅰ.软件功能 Ⅱ.软件结构 Ⅲ.软件性能 Ⅳ.软件资料
A.Ⅰ和Ⅱ
B.Ⅰ和Ⅲ
C.Ⅰ,Ⅱ和Ⅲ
D.全部