A、group
B、crowd
C、school
D、swarm
第1题:
A. would have seen
B. would see
C. have seen
D. saw
第2题:
___________
A.found B.knew C.finds D.saw
第3题:
钨极氩弧焊的英文缩写是()。
A.SMAW
B.GTAW
C.GMAW
D.SAW
第4题:
A. Seeing
B. To see
C. Seen
D. Saw
第5题:
第6题:
焊条电弧焊的英文缩写是()
A.SMAW
B.GTAW
C.GMAW
D.SAW