专有使用权
参考答案：
也称为独占许可证、独占许可合同，是指在一定期限，一定地域范围内，被许可人以一定方式独占性使用作品的权利。
When father was young, he ______ from morning till night. [ ]
A. was made work
B. was made working
C. made to work
D. was made to work
按照经济用途，存货可以分为（）。
A.原材料
B.在途商品
C.在产品和自制半成品
D.产成品
