Which of the following is not a public good?
A: national defense
B: patented technological knowledge
C: general knowledge
D: tornado siren
A: national defense
B: patented technological knowledge
C: general knowledge
D: tornado siren
举一反三
- Knowledge that is patented is a A: public good, whereas knowledge that is not patented is a common resource. B: private good, whereas knowledge that is not patented is a club good. C: common resource, whereas knowledge that is not patented is a private good. D: club good, whereas knowledge that is not patented is a public good.
- Nowadays, of English is very important to a person. A: good knowledge B: a good knowledge C: the good knowledge D: good knowledge
- The shared knowledge which constitutes context is of two types; the knowledge of the l________ they use, and the knowledge about the w_______, including the general knowledge about the world and specific knowledge about the situation in which linguistic communication is taking place.
- To be well fit for the job, _________ . A: a good knowledge of physics is needed B: one needs to have a good knowledge of physics C: it is required that one should have a good knowledge of physics D: a good knowledge of physics is important
- The three levels of recognition do not include (). A: general knowledge B: scientific understanding C: abstract knowledge D: philosophical knowledge