在发电机组磨合期间，可在柴油机的润滑系统注入少量清洁柴油，其注入量约为柴油机所需润滑油总量的（），使各机件磨合得更好。

A、1/20~1/40

B、1/30~1/50

C、1/50~1/60

D、1/40~1/60

Which of the following organizational structures is used in large organizations involved in multiple projects

A．Functiona

B．Strong matri

C．Projectize

D．Combination of all of the abov