Go _____ this first street to the end, you'll find it. [ ]
A. up
B. on
C. in
D. at
答案:A
采用级联方式使用8259中断控制器,可使它的硬中断源最多扩大到()。
A.64个
B.32个
C.16个
D.15个
()of the following items is not in the charge of Chief Officer in repairing operation.
A.Hull cleaning
B.Derusting and painting
C.The maintenance of boiler
D.Docking and undocking