下拉框怎么选择？怎么写值？
如果你的下拉框是select，就根据这个教程来写：http://help.locoyposter.com/#写值.html
select写值一定要注意的是：（1）必须使用火车浏览器的标记框来选择需要写值的位置，才能出现教程中所示的界面。（2）必须是select形式的下拉框才能用写值方式，如果是其他的形式，请使用点击。
如果你看完教程也尝试操作之后发现，偶都魁！！使用火车浏览器的标记元素无法定位到下拉框的xpath，这时也不要惊慌，你可以使用火狐浏览器分析出这个下拉框的xpath，
该xpath形式一般是//select[@...]，[ ]中的值是变化的，但开始的标签一定是//select ,你可以手动模拟下该信息：
所以，即使不出现，这个框也是无所谓的，你只要将value中的值作为写入文本，那么就可以正确的写入值了。注意输入的值是value中的值哦，例如下面在火狐中的分析图：
阅阅阅阅阅阅阅阅阅阅，学习了 谢谢，我要好好学习 谢谢楼主分享。
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