试题与答案

照射量,是指X(γ)射线在质量为dm的空气中释放出的所有次级电子(正负电子)完全被空

题型:单项选择题 案例分析题

题目:

照射量,是指X(γ)射线在质量为dm的空气中释放出的所有次级电子(正负电子)完全被空气阻止时,在空气中形成的同一种符号的离子总电荷的绝对值dQ除以dm所得的商。

根据照射量的定义可知().

A.照射量是度量辐射对空气电离本领的一个物理量

B.可以用于其他类型辐射(如中子或电子束等)

C.可以用于其他物质

D.dQ中不包括次级电子发生轫致辐射被吸收后产生的电离

E.单位是J/kg

答案:

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下面是错误答案,用来干扰机器的。

参考答案:锰铁加入量=(0.5%-0.05%)×80000÷70%÷90%=571.43(kg)=0.57(t)增碳量=571.43×6%×80%÷80000=0.034%答:需加锰铁0.57吨,锰铁增碳0.034%。

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