蝗虫在生长过程中，必须蜕皮的原因是 [ ]

A．外骨骼不能生长

B．外骨骼损坏，需形成新的外骨骼

C．表皮细胞老化，死亡

D．蝗虫的形态发生改变

Co-location is one of the tools and technique to ______ .

A．plan the organizational structure

B．develop the project team

C．acquire the project team

D．plan the project resources