Twitter feature: the microblogging social website service.The limitation of each post is 140 words， permeability is very strong，
Twitter feature: the microblogging social website service.The limitation of each post is 140 words， permeability is very strong， but slow and steady， 5700 posts per second， active users for 560 million.
A.正确
B.错误
正确答案：对
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