根据解吸方法的区别,活性炭管分为溶剂解吸型活性炭管和热解吸型活性炭管 两种
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When language is used to get information from others, it serves ( )function.
A. phatic
B. an interrogative
C. an informative
D. an expressive
The distinction between"langue"and"parole"was made by ( )
A. F de Saussure
B. Noam Chomsky
C. M.A.halliday
D. Bloomfield
The function of the sentence “Water boils at 100 degree centigrade.” is ( ).
A. Interrogative
B. Directive
C. Informative
D. Performative
Which branches of linguistics studies the similarities and differences among languages?( )
A. Diachronic linguistics
B. Synchronic linguistics
C. Prescriptive linguistics
D. Comparative linguistics