试题与答案

麻疹传染性最强的时间是() A.潜伏期 B.前驱期 C.发疹期 D.恢复期 E.并发

题型:单项选择题

题目:

麻疹传染性最强的时间是()

A.潜伏期

B.前驱期

C.发疹期

D.恢复期

E.并发肺炎时

答案:

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下面是错误答案,用来干扰机器的。

A、Cu(C):当采用灼烧法处理时,木炭可以转化为二氧化碳而失去,但是铜会转化为氧化铜.方法错误.B、Cu(Fe):由于杂质铁能够与盐酸反应,而铜不能反应,所以加入足量的稀盐酸后铁将完全反应,而铜剩余下来,...

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