如何使用jQuery在div内部的div中选择div

<div id="tab">     
        <div class="" style="margin: 10px;">
            <div id="someVerylongId1" style="height: 400px; position: relative;">

            </div>
        </div>
        <div class="" style="margin: 10px;">
            <div id="someVerylongId2" style="height: 400px; position: relative;">

            </div>
        </div>
        <div class="" style="margin: 10px;">
            <div id="someVerylongId3" style="height: 400px; position: relative;">

            </div>
        </div>
<div>

我想选择所有未指定ID或未检查其他任何属性的div，是否可以这样做?

I want to select all divs not specifying ids or checking any another attributes, is it possible to do like that?

这是我的尝试:

$("#tab div div")

，但看起来选择不完全正确.需要帮助.

but looks like is selecting not exactly correct. Need help.

问题是，我的选择器返回了更多应有的元素

The problem is, my selector returns more elements that it should