焦炭破损主要原因是碳素熔损反应及风口循环区（）引起的回旋运动。
参考答案：高速气流
If we are all willing to make _____ with each other ______ when we are in dispute，quarrels and conflicts will be avoided and we will surely live in peace.
A．acquaintance
B．adjustment
C．contact
D．compromise
白喉毒素是一种（）毒素。
