I majored in civil engineering (transportation and civil engineering). When I was working before, which was better for me to sign China Railway, China Construction and China Communications? Can learn

I majored in civil engineering (transportation and civil engineering). When I was working before, which was better for me to sign China Railway, China Construction and China Communications? Can learn more? The company is just a platform. Can you learn something? See someone. Every company is a place to exercise people, but it is better than China Communications and China Communications. At least in terms of treatment, management is better, but if you are in the direction of transportation and civil engineering, CCCC may be more relevant, but it doesn't matter if they are almost the same. Drawing is easy to learn. It's not that China Railway is not good, but it depends on the specific situation of its subsidiaries, including the strength of treatment management and business system = = You can't simply say which one China Railway CCCC will build. Well, that's just a general situation. For individuals, these so-called overall situations have little reference significance. So I suggest you be clear about the company, qualification, strength and business project of the company you want to sign. For example, if you want to work in Qinghai, you can see if that company has any projects in Qinghai. Generally, the company will consider the principle of nearby arrangement when allocating them (if you are from Qinghai or a province near Qinghai), and then it is possible to allocate you to the project there.