在软件工程中,当前用于保证软件质量的主要技术手段是( )。
A.正确性证明
B.测试
C.自动程度设计
D.符号证明
参考答案:B
用方框内所给单词的适当形式填空。每空格限填一词,每词限用一次。
1. The weather here is ________ and warm. We often go out to play games.
2. People love dogs because they are clever and ___________.
3. — What's your sister's job?
— She is a _________ She works in a hotel.
4. — Do you often do ________ at the mall?
— No, I often buy things in the supermarket.
5. It is very cold in Antarctic (南极), but __________ live there.
测量1000V以下电缆的缘缘电阻,应使用()摇表。
A、1000V
B、2500V
C、2500或1000V