公文的主题词最多不超过()。
A.6个
B.3个
C.4个
D.5个
参考答案:D
The cruel cook was guilty ______murder. He was involved _____ the case.
A.with, with
B.of, in
C.of, on
D.in, of
在虚拟存储系统中,相联存储器的访问方式是 (24) 寻址的。
A.直接
B.按地址
C.按内容
D.先入后出访问