下列哪项不属于我国的残疾分类?() A.视力残疾 B.听力语言残疾 C.智力残疾 D 发布时间:2019-02-21 16:27 │ 来源:www.tikuol.com 题型:单项选择题 A型题 问题: 下列哪项不属于我国的残疾分类?()A.视力残疾B.听力语言残疾C.智力残疾D.残损E.精神残疾
题型:单项选择题 A型题 A sharp sword was found buried together with the royal carpenter, which was believed _____himself against grave robbers. [ ]A. used to defend B. being used to defend C. to be used to defending D. to be used to defend 查看答案
题型:单项选择题 A型题 我国铁路上火车经过多次提速,火车的运行速度较大,而车轮与铁轨间的动摩擦因数又不大,所以飞驰的火车在发生险情紧急刹车后,到完全停下的制动距离是很大的.据实际测定,在某一直线路段,某列火车车速为86.4km/h时,制动距离为960m.(设火车刹车时受到的阻力不变)(1)求紧急刹车时火车的加速度大小.(2)在同一路段,该列火车的行车速度提高到108km/h时,制动距离变为多少? 查看答案