What do we know about the father?
A. He has found his long lost son.
B. He was still looking for his son.
C. He is working in Russia now.
D. He asked the villagers for help.
查看答案
Why is Wang Hongli considered a hero?
A. He prevented a traffic accident.
B. He saved 372 lives.
C. He did his job very well.
D. He worked under the sea.
若排列1294i56k7是偶排列，则i=,j=
A. i=3 ,j= 8
B. i= 8,j= 3
C. i= 8 ,j=8
D. i= 3,j= 3
( )是个别缸工作不良故障的现象之一。
A.动力性好
B.怠速发抖或怠速熄火
C.经济性好
火花塞积碳过多导致旁路、电极间隙过大或过小、点火线圈、点火控制器等会导致( )。
A.个别缸工作不良
B.发动机正常工作
C.排放更少
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