A、Descriptive research & Analytical research.
B、Theoretical research & Library research.
C、Empirical research and Field research.
D、Applied research and Theoretical research.
第1题
A、Primary research & Secondary research.
B、Theoretical research & Library research.
C、Empirical research and Field research.
D、Applied research and Theoretical research.
第4题
A、natural anti-bacterial
B、durable
C、water-resistant
D、sustainable
第8题
A、One research
B、Primary research
C、Two research
D、Secondary research
第10题
A、a medium of exchange
B、a unit of account
C、a store of value
D、a standard of deferred payment
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