试题与答案

举出至少两种RoHS检测中需检测的重金属元素() A.铅(Pb)汞(Hg)镉(Cd)

题型:单项选择题

题目:

举出至少两种RoHS检测中需检测的重金属元素()

A.铅(Pb)汞(Hg)镉(Cd)六价铬(Cr6+)

B.铅(Pb)汞(Hg)镉(Cd)铜(CU)

C.铅(Pb)锌(ZN)镉(Cd)铁(FE)

D.铅(Pb)汞(Hg)铁(FE)六价铬(Cr6+)

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对解析: 在劳务结果不能可靠估计时,对于已经发生的成本,只能在可以补偿的金额范围内确认收入,不能补偿部分确认为当期损失。

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