只用下列正多边形,不能进行平面镶嵌的是[ ]
A.正方形
B.等边三角形
C.正六边形
D.正十一边形
答案:D
(c) Compute Cecily’s VAT liability or if applicable, refund, due for the two-month period January/February 2006. (10 marks)
七情致病首先影响的是()
A.脏腑
B.气机
C.气血
D.经脉
E.血液