AIDS的传播方式有（）
A.注射传播
B.母婴垂直传播
C.器官移植
D.与患者同进食
E.输血液制品
参考答案：A, B, C, E
学校要买20个篮球和60个实心球，共用去1380元，已知篮球单价为31.5元，实心球单价为多少？
Which of the following process involves determining project roles，responsibilities，and reporting relationships，and develops the staffing management plan ？（）
A．Manage project tea
B．Human resource plannin
C．Develop project tea
D．Acquire project tea
