木材固有缺点是(),尺寸变化大,易划伤,发霉,虫蛀等。
参考答案:湿涨干缩
- Are you coming to the concert?
- _______________ . Hearing a concert is my favourite.[ ]
A. You bet
B. It’s a pity
C. It doesn’t matter
为确保坍落度试验插捣密实,每次插捣要尽可能插入下层的底部。()