试题与答案

当溶液的厚度不变时,吸收系数的大小取决于A.光的波长 B.溶液的浓度 C.光线的强弱

题型:单项选择题

题目:

当溶液的厚度不变时,吸收系数的大小取决于

A.光的波长

B.溶液的浓度

C.光线的强弱

D.溶液的颜色

E.仪器的性能

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析: 本题考查考生对swithch(expression)语句的理解。表达式expression只能返回:int、 byte、short和char,题目中的double是不正确的。同时还要注意,多分支结构中,case子句的值必须是常量,而...

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