I met Jack on ____________ way home yesterday. [ ]
A. my
B. me
C. his
D. him
答案:A
磨床加工精度较高,工件经磨削后尺寸精度可达( )。
A.IT1~IT2
B.IT5~IT6
C.IT10~IT12
D.IT17~IT18
子程序通常分为两类:【 】和函数,前者是命令的抽象,后者是为了求值。