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【单选题】
二OO八年某建筑工地焊工黄某焊接时发现电焊机一次接线柱处冒烟而且闻到电线的焦糊味,于是就找来电工进行维修,电工发现是一次线接线螺丝松动,就用扳手将松动的螺丝拧紧后交给焊工黄某继续使用。焊工手触碰到电焊机时,大叫一声倒下,送医院抢救无效死亡。经查焊机一次接线端子电木板烧穿,螺丝碰到焊机外壳上导致电焊机外壳带电,焊工黄某触电死亡。电焊机保护接零线与保护接零干线连接有什么要求()。
A.
可几台电焊外壳串到一起接干线上
B.
必须每台电焊外壳分别接干线上
C.
可以两台焊机外壳串到一起接干线上
D.
焊机外壳串联接干线的导线不得小于6mm 2
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参考答案:
举一反三
【单选题】After twenty years of doing nothing, Patrick was finally on the ______ road.
A.
right
B.
precise
C.
accurate
D.
exact
【多选题】税务部门作为国家主权下政务链的一个重要组成部分,主权区块链概念具有()的特征,更符合税收治理的需求。
A.
自主
B.
安全
C.
可控
D.
随机
【判断题】(R,τ f )满足C 1 公理。
A.
正确
B.
错误
【简答题】After twenty years of shaving(剃须)himself every morning, a man in a small Southern town thought he had enough. He told his wife that he intended to let the local barber shave him each day. He put on hi...
【多选题】区块链的组成部分有()。
A.
数据化交易物
B.
账本
C.
监管机构
D.
共识机制
【简答题】翻译作业-4-After Twenty Years.pdf
【单选题】Tom all his loan after twenty years during his family lived a hard life. [     ]
A.
paid back;when
B.
paid off;why
C.
paid off;which
D.
paid for;that
【单选题】When he was set free after twenty years in prison, he was amazed ______ the changed world he found.
A.
at
B.
of
C.
on
D.
to
【简答题】He finally won his after twenty years in jail.
【简答题】阅读理解。 After twenty years of shaving himself every morning, a man in a small Southern town thought he had enough. He told his wife that he wanted to let the barber shave him every day. He put on his ha...
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