It was _____ who telephoned me yesterday.[ ]
A. him
B. his
C. himself
D. he
答案:D
负责维护交通设施、交通秩序,进行交通管理、处理交通事故的警察称为交通警察。( )
为测量高负载大型计算机系统的性能,最适宜的方法是()。
A.查看运行日志
B.硬件监控
C.软件监控
D.查看作业记账系统