证书发证日期处应填写发证机关审核批准办理的证书日期,发证日期是证书生效日期。
参考答案:对
Our school plans to have a parents' meeting_______ the afternoon_______ January 27th.
A.in, of
B.on, in
C.on, of
D.in. at
锅炉本体是()和()两大部分组成。