正铲挖土机的挖土特点是(),适用于开挖停机面以上的一至四类土和经爆破的岩石、冻土。A 发布时间:2018-06-18 20:36 │ 来源:www.tikuol.com 题型:单项选择题 问题: 正铲挖土机的挖土特点是(),适用于开挖停机面以上的一至四类土和经爆破的岩石、冻土。A.前进向上,强制切土B.后退向下,强制切土C.后退向下,自重切土D.前进向上,自重切土
题型:单项选择题 —Where is the bookshop?—Get off the boat and go the station,you can see it.[ ]A. onB. downC. pastD. pass 查看答案
题型:单项选择题 (2013·江西南昌一模)Why ________ it get colder when we climb up a mountain? We are getting nearer to the sun!A.ought toB.wouldC.shouldD.must 查看答案