间接加热方式
参考答案：
热媒通过传热面传递热量加热冷水的方式叫间接加热。13.器具通气管：卫生器具存水弯出口端接出的通气管道。
书院制度在安徽发达的原因及表现如何？
He must have been very hard to please, indeed, if he did not approve the salary of he job.
A. if he had not approved B. if he is not approved ofC. if he not approves D. if he had not approved of
