He ______ his bike so he has to walk there. [ ]
A. lost
B. has lost
C. had lost
D. loses
答案:B
35kV变电所建筑物内地面标高,宜高出屋外地面()。
A.0.1m
B.0.3m
C.0.5m
D.0.8m
打字机色带,已上油墨 ( )
A.19
B.21
C.22
D.25