锯材干燥过程工艺过程包括些什么步骤？
参考答案：
周期式强制循环木材干燥工艺过程包括：准备工作、干燥基准（工艺）的控制、干燥结束、干材贮存
全国县级文明城市的主要测评内容有哪些？
With his work completed, the manager stepped back to his seat, feeling pleased（）he was a man of action.
A.which
B.that
C.what
D.whether
