For an n-type GaAs MESFET, the relationship of the two work functions in the gate junction is
A、Φm>Φs
B、Φm <φs>
C、Φm=Φs
D、none of the above
A、Φm>Φs
B、Φm <φs>
C、Φm=Φs
D、none of the above
It has been argued by some that gifted children should be grouped in special classes. The__ __has been on the belief that in regular classes these children are held back in their intellectual (智力的) growth by learning situation that has designed for the____children. There can be little doubt that____classes can help the gifted children to graduate earlier and take their place in life sooner. However, to take these____out of the regular classes may create serious problems. Many are concerned that gifted children become____and lose interest in learning. However this concern is more often from parents and teachers than from students, and some of these____simply conclude that special classes should be set up for those who are talented. Some top students do feel bored in class, but why they____so goes far beyond the work they have in school. Studies have shown that to be bored is to be anxious. The gifted child who is bored is an____child.
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Choose one question from 1 - 3 and one from 4 - 6 and give brief answers in English: Washington Irving What is the historical and socio-cultural background of the Romantic Period in America? What are the literary characteristics in the works of American romantic period? What is the theme of Rip Van Winkle? List the major works of Washington Irving and discuss the artistic characteristics of his works. James Fenimore Cooper What are the artistic achievements of James Fenimore Cooper? What are Cooper’s major works and what is “frontier novel”? What are the characteristics of Cooper’s writing techniques?
A、land
B、field
C、aspect
D、territory
A、conceive
B、confront
C、complement
D、compliment
A、homojunction
B、heterojunction
C、ohmic contact
D、rectifying contact
A、population inversion
B、flat band
C、strong inversion
D、. pinch off
A、a negative number
B、a positive number
C、zero
D、depending on the operating condition
A、increase
B、decrease
C、not change
D、none of the above
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