单选:为了保证管子顶进中不产生错口和偏斜,临时联结用的装配式内涨圈一般由()左右厚的钢板焊接而成。A.25mmB.5mmC.10mmD.20mm 题目分类:安全生产法及相关法律 题目类型:单选 查看权限:VIP 题目内容: 为了保证管子顶进中不产生错口和偏斜,临时联结用的装配式内涨圈一般由()左右厚的钢板焊接而成。A.25mmB.5mmC.10mmD.20mm 参考答案:
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以下歌曲都曾经是奥运会主题曲,但被选为奥林匹克运动会永久会歌的是( )。 A.《奥林匹克颂歌》B.《奥林匹克赞歌》C.《奥林匹克交响曲》D 以下歌曲都曾经是奥运会主题曲,但被选为奥林匹克运动会永久会歌的是( )。 A.《奥林匹克颂歌》B.《奥林匹克赞歌》C.《奥林匹克交响曲》D.《奥林匹克之歌》 分类:安全生产法及相关法律 题型:单选 查看答案
[完型填空] One day a woman got into her car and started driving home after w... [完型填空] One day a woman got into her car and started driving home after w... 分类:安全生产法及相关法律 题型:单选 查看答案