<select class="form-control industry_small_id_select" name="submitmethod" id="submitmethod">
<option value="POST" selected >POST</option>
<option value="GET">GET</option>
</select>
或者
<select class="form-control industry_small_id_select" name="submitmethod" id="submitmethod">
<option value="POST" selected="selected" >POST</option>
<option value="GET">GET</option>
</select>