问题
单项选择题
井下由采区变电所引出的馈电线上,应装设()。
A.短路、过负荷、接地和欠压释放保护
B.短路、过负荷、漏电保护装置
C.短路、过负荷、单相断线、漏电闭锁保护装置及远程控制装置
答案
参考答案:B
井下由采区变电所引出的馈电线上,应装设()。
A.短路、过负荷、接地和欠压释放保护
B.短路、过负荷、漏电保护装置
C.短路、过负荷、单相断线、漏电闭锁保护装置及远程控制装置
参考答案:B
阅读短文,从A-G七个句子中选择正确选项还原到短文中,使短文内容完整、正确。
Bill started the “football OK!” website two years ago, and now more than 20,000 people visit it every day. 小题2:____ He usually gets up at six and looks at his e-mails. Then he goes to school from nine to fourteen. In the evenings, he always works for about four hours on his website. 小题3:____ “At the moment I am thinking about a new website on American football, maybe for next year,” he said. And is Bill the same person that he was three years ago? 小题4: ____ “I have met a lot of interesting people on the website and I have traveled all over the world.” Bill doesn’t know about the future. “Maybe I will sell the website, I really don’t know. I will just wait and see.” When he is 21, Bill will be a millionaire (百万富翁). 小题5: ____ |