发动机装配原则
参考答案:
以气缸体为装配基础,由内向外逐段装配。
在﹣2,+3,﹣6这三个数中,任意两数之和的最小值是[ ]
A.1
B.﹣3
C.﹣8
D.﹣9
The movie is full of , children are not supposed to see it. [ ]
A. violence
B. challenge
C. adventure
D. caution