断开电流时,次级线圈上大约会产生()伏特的电压。 ["0-10000","10000-20000","20000-30000","30000-40000"]
要动员全社会力量关心支持水利工作,加大力度宣传国情水情,提高全民()意识。 ["水患","节水","水资源保护","防灾"]
人类文明诞生于多少年前?() ["六千年","七千年","八千年","九千年"]
相对评价包括() ["排序法","配对比较法","关键事件法","人物比较法","强制分配法"]
《子夜》和《林家铺子》的作者是() ["王蒙","茅盾","巴金","鲁迅"]
幼儿各年龄段的发展特点及家教特点是什么?