Before closing,a plant should put up a notice and keep it for 90 days.
A、True
B、False
C、NotGiven
Task 221. Some form of ideal society is22.Books written by J. Verne are23.Peopleenjoy24 Works of modern science fiction have25.Writers find it difficultA. a recurrent themeB. to keep ahead of scientificadvancesC. reading books of science fictionD. political implicationsE. a current themeF. read worldwide
Which of the following is NOT mentioned in the passage as a function of electronics in televisiontransmissions?
A、The conversion of an image into electronic impulses.