【单选题】The people of that village mostly live a long life, about seventy-five years of age _____.
【多选题】大学生群体是一个特殊的社会群体,自身的特点有:()
D.
社会需求强烈,但经验不足,缺乏必要的社会经验,安全防范意识较差,自我防范能力较弱
【判断题】缺乏社会经验、安全防范意识差、自我防范能力弱成为大学生普遍的弱点。()
【单选题】厂家只对( )造成的配件损坏,负责免费维修。
【判断题】澄清池运行中要控制的主要环节是排泥量和泥渣循环量。
【单选题】As long ago as the fourteenth century, an Englishman made ______ the discovery that people would rather pay large sums of money than have their life work destroyed.
【简答题】低碳钢试件在拉伸和扭转时的的破坏形式是否一样?引起试件破坏的因素是什么?