A、<p><span style="font-family: 宋体; font-size: 13.3333px; ">交易的场所</span></p>
B、<p><span style="font-family: 宋体; font-size: 13.3333px; ">交易的层次</span></p>
C、<p><span style="font-family: 宋体; font-size: 13.3333px; ">交易的期限</span></p>
D、<p><span style="font-family: 宋体; font-size: 14px; ">交割的时间</span></p>