A、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">组成</span></span></p><p></p>
B、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">结构</span></span></p><p></p>
C、<span style=";font-family:微软雅黑;font-size:15px"><span style="font-family:微软雅黑">构造</span></span></p><p></p>
D、<span style=";font-family:微软雅黑;font-size:15px">ABC</span>