综合资源系统可直接删除资源，无需考虑资源的关联性。
参考答案：错
My mother asked me to show my homework to her. My mother said to me, "Show ____ homework." [ ]
A. her my
B. me your
C. her your
D. me his
（）属于低合金刃具钢。
A.GCr6
B.9SiCr
C.W18Cr4V
D.5CrMnMo
