The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can ___ all foods are secure to us, but we are sure that the situation is turning for the better．

A．acknowledge

B．guarantee

C．identity

D．clarify

作为商品仓储活动的产品（），其生产过程消费过程是同时进行的，既产能任存也不能积累。

A、仓储劳务

B、仓储价值

C、仓储加工

D、仓储管理