某内螺纹的标记为“M8”,由这一简化标记无法确定的公差带代号。()
参考答案:错
连词成句。
1. April is birthday 2nd her.
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2. is birthday Ellen's when?
3. Jack is old how?
4. birthday August your is 12th?
5. a festival have we music.
()的排列方法是多人合影照人物胖瘦的调整方法。
A、胖一排、瘦一排
B、胖和瘦交叉排列
C、胖后、瘦前
D、胖、瘦混合