奠定古希腊斯巴达城邦军事基础的是哪次改革?
参考答案:
奠定古希腊斯巴达城邦军事基础的是来库古改革。
As nobody here knows what’s wrong with the machine, we must send for an engineer to _______ the problem.
A.raise
B.face
C.present
D.handle
什么叫有效硬化层深度?如何计算?