把一个等边三角形从它的一个顶点平均分成2个三角形,每个小三角形的内角和是[ ]
A.90。
B.180。
C.360。
D.无法判断
答案:B
灭菌的环节在注射剂、眼用制剂等无菌制剂药剂的制备中
A.不必要
B.可有可无
C.有时需要
D.一些种类需要
E.不可缺少
The expansion of adult training program has resulted partially from the feminist movement, which encourages the women to improve their skills for the job market.