未知题型
A、减量化B、资源化C、无害化D、钝化正确答案:钝化
British Industrial Revolution and its expansion of colo...
单项选择题British Industrial Revolution and its expansion of colonial empire were symbiotic, that is, they were beneficial to each other. ( ) A. 对 B. 错
血液主要由______和______组成。
问答题血液主要由______和______组成。
下列不属于危险固体废弃物的是()
未知题型下列不属于危险固体废弃物的是()