塑料排水管道不宜布置在[填空(1)]附近,当不能避免并导致管道表面温度大于[填空(2)]℃,应采取隔热措施。立管与家用灶具边缘净距不得小于[填空(3)]m。 A. 热源 B. 60 C. 0.4
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【简答题】I. 单句填空 1. She __________ (phone) someone, so I nodded to herand went away. 2. Since the time humankind started gardening, we__________(try) to make our evironment more beautiful. 3. The twins, who __...
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