读某地秸秆利用示意图，回答下列问题。

“OTC”是指（　　）

    Pandas are famous animals. People like them a lot. The panda's face looks like a cat's, but its fat body and short tail(尾巴) are like a bear's. So people call this animal bear-cat. Scientists call it eat bear. The panda has a very mild temperament(性情温和). It is very loveable.

    The panda is an animal only living in China. The northeastern part of Sichuan Province and southern part of Gansu Province are its native home. Pandas like to climb trees. They live in the forests of high mountains eating bamboo and drinking spring water(泉水).