皮皮学，免费搜题
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【单选题】
按化学成分不同，钢材可分为下列( )两类?A.
碳素钢、镇静钢
B.
合金钢、碳素钢
C.
脱氧钢、合金钢
D.
脱氧钢、镇静钢
拍照语音搜题，微信中搜索"皮皮学"使用
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皮皮学刷刷变学霸
举一反三
【简答题】上井作业是否要穿戴劳保用品，带安全帽？为什么？
【多选题】根据《建筑机械使用安全技术规程》（JGJ33-2012），7.1，一般规定中正确的是（）
A.
电力驱动的桩机，作业场地至电源变压器或供电主干线的距离应在200m以内
B.
安装桩锤时，应将桩锤运到立柱正前方2m以内，并不得斜吊
C.
当打桩船或排架的偏斜度超过2°时，应停止作业
D.
桩锤在施打过程中，操作人员应在距离桩锤中心10m以外监视
【判断题】在进行高压相关操作前,维修人员必须穿戴好劳保用品:戴好绝缘手套,穿好高压绝缘鞋。在戴绝缘手套前,必须要检查绝缘手套是否有破损的地方,要确保手套无绝缘失效。
A.
正确
B.
错误
【简答题】Translate the following sentences into Chinese: 1.Mary Magdalene is a loyal follower of Jesus and prominent in his ministry. Jesus intervenes on her behalf in an argument she has with Peter, according...
【简答题】从方框中选择合适的短语并用其正确形式 填空,完成句子或对话。can’ t wait, at school, be proud of, as well, be afraid of Tom always does well in all his subjects and his parents____________him. — Mrs Hand likes table tennis. — Righ...
【单选题】— Peter told me he wanted to come with us. Is it OK for you? — I don't mind _____ he pays for his meals. [ ]
A.
as far as
B.
as well as
C.
as long as
D.
as soon as
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