frq rotation和torque。芜湖，王炸。我直呼我是傻逼。最后一个大题根本看不懂，越读不懂越紧张，最后好...
How many hours you need to spend on studying for AP tests every weekis going to depend a lot on how much material you need to review and how comfortable you are with the format of the exam questions. In general, though, you should expect to study for several hours a week split over ...