【单选题】【消耗次数:1】
露天装设的有爆炸危险的金属储罐和工艺装置,当其壁厚不小于4mm时,一般不再装设接闪器,也无需接地。
正确
错误
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相关题目
【判断题】 露天装设的有爆炸危险的金属储罐和工艺装置,当其壁厚不小于4mm时,一般不再装设接闪器,也无需接地。( )
①  正确
②  错误
【单选题】 当油毡平行屋脊铺贴时,短边搭接处不小于150mm,长边搭接不小于:
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【单选题】 泛水要具有足够的高度,一般不小于( )mm。
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【判断题】 泛水要具有足够的高度,一般不小于100mm。()
①  正确
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【单选题】 钢筋混凝土圈梁宽度与墙同厚,高度一般不小于()。
①  120mm
②  180mm
③  200mm
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【判断题】 现浇无梁楼板的跨度较大,一般厚度不小于80mm。
①  正确
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【单选题】 明敷或暗敷于干燥场所的金属管布线应采用壁厚不小于(??)的电线管。
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【单选题】 高压电气设备单独装设的接地装置,其接地电阻应大于().
①  A.0.5Ω
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【单选题】 装设接地线时,应(????)。??
①  先装导线端
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随机题目
【单选题】 The rescue team must have searched for the missing visitors two days ago, _____?
①  mustn’ t they
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【单选题】 I’ m____ that he didn’ t come.
①  astonished
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【单选题】 ____ is announced in the papers, our country has launched a large scale movement against smuggling and fraudulent activities in foreign currency exchange deals.
①  What
②  As
③  Which
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【单选题】 The ____ crown jewels are kept in the Tower of London.
①  valued
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③  invaluable
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【单选题】 Though ____ rich, she was better off than at any other period in her life.
①  by means of
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【单选题】 She found herself____ forward more eagerly to the holiday at home.
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【单选题】 When Sarah and I ____ on an article for the school newspaper, we found it difficult to work together.
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