Daming is going to visit Simon __ three 发布时间:2017-04-20 02:40 │ 来源:www.tikuol.com 题型:选择题 问题: Daming is going to visit Simon __ three weeks.[ ]A. in B. after C. for
题型:选择题 带式输送机完好标准规定:带式输送机的()过电流和欠电压、钢丝绳和输送带脱槽、局部过载、钢丝绳张紧小车到达终点和张紧重锤落地等各种保护装置齐全、灵敏可靠。A、过速保护B、防打滑C、防跑偏D、断带E、飞带F、堆煤 查看答案