【单选题】下列钢号中, 是合金渗碳钢,40Cr是合金调质钢。
【单选题】You should treat him (in) the way ____ suits him most.
【单选题】下列钢号中,20是渗碳钢,( )是调质钢。
【单选题】Walt Whitman, whose ______________ established him as the most popular American poet of the 19 th century.
【多选题】下列钢号中,()是合金渗碳钢,()是合金调质钢。
【单选题】Walt Whitman, whose ___________ established him as the most popular American poet of the 19th century.
【单选题】若函数y=f(x)的反函数是y=g(x),f(a)=b,ab≠0,则g(b)等于( )
【单选题】_______’s Leaves of Grass established him as the most popular American poet of the 19th century.
C.
John Greenleaf Whitter
【简答题】下列钢号中,(
)是合金渗碳钢,( )是合金调质钢。A. 20 B. 65Mn C. 20CrMnTi D. 45 E. 40Cr
【单选题】逻辑函数F=((AB'+C)D+E)B的反函数是