在G71P(ns)Q(nf)U(△u)W(△w)S500程序格式中,()表示精加工路径的最后一个程序段顺序号。
A、△w
B、nf
C、△u
D、ns
参考答案:B
触头磁粉探伤要求开路电压不得大于24伏
Many of the electric and electronic products we purchase and consume today are what some industrial experts call " homogeneous toys".
A.identical
B.homosexual
C.unrelated
D.distinguishable