在我国25T型客车上使用的有()分配阀。 ["GL型","GK型","104型","120型"]
属于安全阀的主要性能参数有() ["大小","公称压力","开启高度","排放量"]
土方路基压实度的规定值,按高速和一级公路、二级公路、三四级公路三档设计。
If we ask the class to listen and we ask the questions afterwards, we are helping them improve their listening skill indeed.()
分条()单元,自身应是几何不变体系,同时还应有足够的(),否则应加固
印象派