After graduation, I want to go to BCIT in Canada to study technology. Is it possible to refuse my visa?

1) If you are in China, I personally think that VO will think that you have enough intention to immigrate and refuse the visa, because you have graduated from junior college, and the school you choose to continue your studies is only junior college, not a further master's degree. Therefore, VO has reason to believe that your past reason is that you want to stay in Canada instead of returning to China after finishing your studies, and he thinks that these similar means of making a living can also be obtained in China, and the reason for studying abroad is not very reliable.

2) If you are in Canada or the United States, it is another matter, and the refusal rate will not be great. There is no way, because you are already in Canada or the United States, VO will not refuse you a visa because of that immigration intention.