轴向波
参考答案:
轴向波是指在矩形混响室内的声场中,其行进方向与边平行的波
根据要求改写句子。
1. Don't be angry with your son. I think he can do better next time.(改为同义句)
Don't ____ ____ ____ your son. I think he can do better next time.
2. "Light travels faster than sound," our teacher told us.(转换为间接引语)
Our teacher told us light ____ ____ than sound.
3. "I'm going on a trip," Jim told his friends.(转换为间接引语)
Jim told his friends ____ ____ going on a trip.
4. "You are like big brothers or sisters to them." They said to us.(转换为间接引语)
They said to us ____ ____ like big brothers or sisters to them.
有关口服复方短效避孕药的副反应应除外()
A.可致卵巢癌
B.类早孕反应
C.面部色素沉着
D.体重增加
E.月经量减少