【简答题】数学课上老师出了一道题,计算:(2a n+5 -3a n+4 -4a n+3 )÷(-5a n-1 )。小明解题过程如下: 同学们,你们能找到小明的错误,并给出正确答案吗?
【简答题】一次测验共有5道题,做对1道题得1分,已知26人的平均分超过4.8分,其中有3人得4分,最低分3分,则得5分的有 ______人.
【单选题】三人独立破译一密码,他们能单独译出的概率分别为1/5,1/3,1/4,则此密码被译出的概率是
【单选题】共有100个人参加某公司的招聘考试,考试的内容共有5道题,1~5题分别有80人、92人、86人、78人、74人答对。答对3道和3道以上的人员能通过考试,请问至少有多少人能通过这次考试。( )
【简答题】阅读理解。 David got a job in a police station after he left school. He worked there for 42 years and he'll retire this year. He worked hard in the past 42 years. But he was not a lucky man. He failed to c...
【单选题】无领导小组讨论中,一组被评人的数量为( )。[201 1年5月二级真题]
【简答题】阅读短文,根据短文内容判断所给句子正(T)误(F)。 David got a job in a police station after he left school. He worked there for 42 years and he’ll retire this year. He worked hard in the past 42 years. But he was not a luck...
【简答题】阅读短文,根据短文内容判断所给句子正(T)误(F)。(共5小题,每小题2分) David got a job in a police station after he left school. He worked there for 42 years and he’ll retire this year. He worked hard in the past 42 years. But he wa...
【单选题】He worked quietly no one knew he was there.
【简答题】共有100个人参加某公司的招聘考试,考试的内容共有5道题,1~5题分别有80人、92人、86人、78人和74人答对。答对3道和3道以上的人员能通过考试,请问至少有多少人能通过这次考试?( )