两个定语从句可以连用吗

高考考试作文句子互联网上有很多可选择的并且可以重复观看的学习资源，给大家带来了不少的便捷性和灵活性。

There are a large number of optional learning resources on theInternet, which can be watched repeatedly, which is more convenient andflexible.

两个定语从句连用有问题吗符合语法吗？会引起歧义吗？在写作时会干扰美感吗？

There are a large number of optional learning resources on the Internet, which can be watched repeatedly, which is more convenient and flexible.

两个定语从句不可以如此并列，需加连词 and，而且 which is 有误。修改如下：

There are a large number of optional learning resources on the Internet, which can be watched repeatedly and are more flexible and convenient.

汉语习惯上说“灵活便捷”，故调换地方。