韶山型电力机车摩擦减振器的弹簧自由高为()。 ["90nun","95mm","100mm","105mm"]
韶山型电力机车悬挂装置的安全托铁与电机机壳水平间距为()。 ["4mm","6mm","8mm","10mm"]
女性,28岁,转移性右下腹痛10小时,呕吐一次为胃内容物。T39℃。血常规示白细胞15×109/L,尿常规白细胞1~2个/视野,红细胞2~3个/视野。可能出现的最严重的并发症() ["A.肠粘连","门静脉炎","内瘘","外瘘","切口感染"]
韶山型电力机车制动器闸瓦材料是()。 ["铸铁","粉末冶金","铸钢","高摩橡胶"]
韶山s型电力机车轮对自由横动量是()。 ["0.75mm","15mm","lmm","2mm"]
学生在校期间有哪些权利?