【单选题】电气设备检修作业安全注意事项中,正确的是。1高压带电部位必须悬挂危险警告;2如需常电作业时,必须使用绝缘良好的工具;3单人作业时,应格外小心,认真检查以防触电;4作业中注意防止工具、螺栓、螺帽等物掉入电器或者控制箱内;5看守人员应密切注意工作人员的操作
【单选题】游标量具包括游标卡尺、深度游标尺、()和齿厚游标卡尺。
【单选题】Why was Bernard Jackson found guilty and imprisoned for five years?
A.
He committed the crime of raping two women.
B.
The victims mistook him for the real criminal.
C.
He had a previous criminal record.
D.
No witness testified that he was in another location at the time of the crime.
【多选题】嵌入式SQL语句中游标的使用步骤有()。
【单选题】电气设备检修作业安全注意事项中,正确的是()。1高压带电钢位必须悬挂危险警告牌2如需带电作业时,必须使用绝缘良好的工具3单人作业时,应格外小心,认真检查以防触电4作业中注意防止工具、螺栓、螺帽等物掉入电器或控制箱内5看守人员应密切注意工作人员的操作情况
【单选题】电气设备检修作业安全注意事项中,正确的是 。1高压带电部位必须悬挂危险警告牌2如需带电作业时,必须使用绝缘良好的工具3单人作业时,应格外小心,认真检查以防触电4作业中注意防止工具、螺栓、螺帽等物掉入电器或控制箱内5看守人员应密切注意工作人员的操作情况
【单选题】Since no evidence has been found so far he was guilty, he has to be set free.
【单选题】Why wasn't Sven sent to prison?
A.
Because he was too young.
B.
Because he wasn't found guilty.
C.
Because he admitted his guilt to detectives.
D.
Because he worked for a big company.