晶体二极管构造及用途？
参考答案：
晶体二极管是在一个PN结两端接上电极引线并以管壳封装而成，P型半导体引线为阳极，N型半导体引线为阴极。主要用途是整流。
I have nothing to say ______ your complaints, for they are not relevant to my job.
A．with regard to
B．in terms of
C．in the light of
D．in response to
早期的工资理论有哪些？简述其内容。
