最优生产批量决策分析中的相关成本有（）。
A、调整准备成本
B、订货成本
C、储存成本
D、直接材料成本
E、生产成本
参考答案：A, C
与私人产品相比，公 * * 品的核心特征是（）。
A．强制性
B．无偿性
C．排他性
D．非排他性
根据句意及首字母补全单词。
1. She won a g_____ medal at the last Olympics
2. The old man is kind and l_____. Every child here loves him.
3. In 2004 Olympics Liu Xiang set a new r_____ in 110 hurdles.
4. Alice is a college student. She studies at Beijing U_____
5. The boy could hum songs and difficult p_____of music.
6. Thaat's Deng Yaping.She is a great C_____ ping-pong player.
7. He began to l_____ the piano when he was seven.
8. He was b_____ in 1982 in Chongqing.
9. We all like ice s_____.
10. W_____ was Lily born?
a new r_____ in 110 hurdles.