file:圆常考计算题型及圆与全等相似综合突破.pdf file:圆中三大切线定理.pdf file:(4)圆中三大切线定理例7-例8.mp4

file:第32讲：一元一次不等式和一元一次不等式组拓展（一）5.flv file:32.pdf

file:化肥、盐的分类及pH值的测定.pdf file:盐的通性.pdf file:(3)盐的通性第3段.mp4 file:酸碱盐基本概念及常见酸的性质.pdf

file:完美解决复杂实物电路图.pdf file:(2)完美解决复杂实物电路图习题6-习题10.mp4 file:实物电路图转化独门绝技.pdf file:(3)实物电路图转化独门绝技习题10-习题13.mp4