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问题 单项选择题

药物的摩尔吸收系数大是因为

A．该药物对一定波长光的吸收强

B．该药物溶液的浓度高

C．该药物的透光率高

D．该药物溶液的光程长

E．该药物分子的吸收光子概率低

答案

参考答案：A

单项选择题

Man:I thought the librarian said we could check out as many books as we need with our library cards. Woman: That's right, but not those reference books. Question: What does the woman mean

A．Students with a library card can check any book out.

B．Reference books are not allowed to be checked out.

C．Only students with a library card can check out reference books.

D．The number of books a student can check out is unlimited.
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填空题

如果一个Java源程序文件中定义有4个类，则使用Sun公司的JDK编译器javac编译该源程序文件，将产生4个文件名与类名相同而扩展名为 【15】 的字节码文件。
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