When a p-n junction's depletion layer is narrowed and the device acts as a nearly perfect conductor, it is ______.
A、forward-biased
B、reverse-biased
C、unbiased
D、None of the above
A、forward-biased
B、reverse-biased
C、unbiased
D、None of the above
A、Its length.
B、Its method to present the flashback.
C、Both of the flashbacks are presented in the heroines’ dream.
D、Both of the flashbacks are presented in the heroines’ monologues.
A、genes are in the nucleus
B、genes are broken down by pepsin
C、genes are made of nucleic acid
D、genes are made of protein
E、none of the above
B.Business success can be ascribed to innovation. Take Steve Jobs as an exampl
E.If he had not invented innovative devices such as Iphone,he could not have achieved great success in the global market.
C.I feel like living in the city since the life in city can provide entertainment and convenienc
E.
D.Sports help to promote the development of a student’s personality. Such traits of character as competitiveness, teamwork and endurance are cultivated in sports.
A、rather 前面
B、rather 后面
C、-
D、-
A、narrowed; conductor
B、narrowed; insulator
C、widened; conductor
D、widened; insulator
A、decrease the conductivity of an intrinsic semiconductor
B、increase the conductivity of an intrinsic semiconductor
C、stabilize the conductivity of an intrinsic semiconductor
D、increase the insulative quality of an intrinsic semiconductor
A、it is cheaper
B、it is easier to produce
C、it is more tolerant of heat
D、it has a lower forward voltage drop
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