在正常生产过程中，能量受到种种约束和限制，按照人们的意志流动、转换和（）。
A、做功
B、改变
C、使用
参考答案：A
Speaker A. I'm awfully sorry. I hope I haven't spoiled it.Speaker B: ______
A．Oh, it's nothing. Don't let a little thing like that worry you.
B．I know you are unintentional. Just be more careful next time.
C．There is no need for you to say sorry. Anyway, I can buy a new one.
D．You are right. You haven't spoiled it. You see, it's still in good condition.
中国跆协的简称是什么？
