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最佳答案：qualification可分两种类别,厰内（in-house)或厰外(external)所以date of qualification可以是厰内的 品质检测日
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最佳答案：Pure water is nonconducting,and ordinary water is poor conductor.However,soppy i
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最佳答案：However, because of the lower electron conductivity of the ithium vanadium phosp
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最佳答案：A "steel electric cookers of quartz glass," is characterized by: the Department
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最佳答案：（嘿嘿,原来你问了两遍~能不能两遍都给分啊?）This less oil circuit breakers was put into use at No.9.w
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最佳答案：Floor plateWiring diagram2 square meters each at least a hookIn order to supply