为防止操作鼓风机时发生人员触电事故,对地面有什么要求?
参考答案:
为防止操作鼓风机时发生人员触电事故,对地面必须铺设绝缘胶皮。
"Could we put off the meeting?" she asked.
"___________,"he answered politely. This is the only day everyone is available.
A.Not likely
B.Not exactly
C.Not nearly
D.Not really
建国以来开展的涉及 * * 败的运动是()。
A.1951年的三反运动
B.1957年的整风运动
C.1959年的反右倾斗争
D.1966年开始的 * *