【单选题】03-91 (2)电梯限速器应在轿厢速度大于等于( )时动作。
【简答题】阅读材料,完成下列问题。(13分) 材料一:《华商报》王志安的一篇文章《气候贫困人口的中国挑战》中谈道:“我国的贫困带主要有三个:第一个是东部地区的孤岛贫困带,包括东北边境,山东、河南一带的革命老区;第二个是黑河—腾冲线贫困带,这条中间线的两侧,多数都是高原和高山地区,是我国主要的贫困地区所在的区域;第三个就是西部沙漠和高原酷寒地区。” 材料二:黑河(黑龙江)—腾冲(云南)线(如图1所示)是我国的...
【单选题】(2)电梯限速器应在轿厢速度大于等于( )时动作。
【单选题】–Have you considered ______the job as a teacher? --Yes. I like it because a teacher is often considered ____a gardener.
【单选题】What does a firm depend on if it wants to develop and not to be thrown out of the markets? You may say the firm should have some advantages of its own to stand still in the fierce competitive battle f...
A.
They hire people with the least possible money regardless of their skills.
B.
They see skill gaining as their employees' own business.
C.
They prefer to hire self-trained workers.
D.
They only hire skilled workers because of keen employment competition.