We were         when we heard of the news that the plane was crashed in the storm.

A．shocking

B．shocked

C．worried

D．worrying

在生产的能力计划中分为粗能力计划和细能力计划，两种计划的特点是：粗能力计划计算时间较短，而细能力计划计算时间长，不宜频繁计算、更改。