They are __________ than my father.[ ]
A. old
B. older
C. oldest
D. very old
答案:B
为了使类中的某个成员不能被类的对象通过成员操作符访问,则不能把该成员的访问权限定义为
A.public
B.protected
C.private
D.static
编制调车作业计划,要达到哪些要求?