带式输送机最重要、最昂贵的部件是。() ["A、电动机","B、支架","C、输送带","D、托辊"]
我们常把那些一知半解,却喜欢在人前卖弄的人叫:() ["A、半截剑 ","B、半段枪 ","C、半面 ","D、半瓶醋"]
为什么要力争把火灾消灭在初起阶段?
“名花解语”是用来形容什么的?() ["A、女子非常美丽 ","B、花艳丽 ","C、花通人性 ","D、美女善解人意"]
转载机机身由以下组成。() ["A、导料槽、链轮、盲轴组件","B、刮板链、溜槽、桥部结构","C、机尾架、机尾轴、压链板","D、压链板、溜槽、链轮"]
遇到来学生宿舍推销商品的小商贩怎么办?