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Monday, April 7, 2025
Monday, April 7, 2025
问题:热水器的排烟管应采用不锈钢材料,其厚度应不小于()A、0.1mmB、0.2mmC、0.3mm...
Saturday, September 6, 2025
Saturday, September 6, 2025
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问题:8管普通CNG运输槽车一次性能运多少方的天然气?...
Saturday, June 21, 2025
Saturday, September 6, 2025
Thursday, May 15, 2025
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Saturday, June 1, 2024
问题:LNG瓶组气化站的总容积(水容积)不大于()立方,单瓶不大于()L。A、4、410B、4、510C、5、510D、5、410...
Wednesday, August 6, 2025
Sunday, April 27, 2025
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问题:液化石油气在灌装时必须留出适当的气象空间的原因?...
Saturday, June 21, 2025
问题:中压和低压燃气管网采用的钢管应符合哪些国家现行规定?...
Saturday, September 6, 2025
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Monday, January 6, 2025
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