如何在load jquery中发送2参数值

 var siteid = $("#OperationSiteId option:selected").val();
 $("#OperationSiteequipmentId").load("<?php echo $this->Html->url(array('controller'=>'Operations', 'action'=>'equipment_dropdown')) ?>/"+$(equipment).val()+"/"+$(siteid).val()
 var siteid = $("#OperationSiteId option:select