公共产品区别于准公共产品的主要标准是()。
A. 是否同时具备非排他性
B. 一定程度上的非竞争性和非排他性
C. 一定程度上的非排他性或非竞争性
D.是否同时具备竞争性
Question 1
A. Between half an hour to two hours.
B. More than on hour.
C. Less than thirty minutes.
D. Between half an hour and an hour.
Question 2
A. Every day.
B. Every day. Four or finve times a month.
C. Four or five times a week.
D. Only on weekends.
Question 3
Along the river.
B. On the right side of the road.
C. In a nice park.
D. In a gym.