原始凭证是登记日记账．明细账的根据。
参考答案：错
The young man insisted that he _______ nothing wrong and ________ free．
A．did , set
B．had done , should be set
C．do , be set
D．had done , must be set
何谓干球温度与湿球温度？两者有什么关系？
