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【判断题】
两级放大电路采用阻容耦合的方式,因为电容具有隔直通交的作用,所以两级的静态工作点互不影响。A.
正确
B.
错误
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举一反三
【单选题】如图，空气（折射率n。一1）中波长为A的平行单色光，垂直入射在折射率为n1厚度为e的透明薄膜上，经薄膜上、下两个表面反射的两束光发生干涉。若薄膜下方媒质的折射率为n2，且n012，则两束反射光在相遇点的相位差为（）。
A.
4πn1e/λ
B.
2πn1e/λ
C.
4πn1n2e/λ
D.
2πn1n2e/λ
【单选题】Sandy is upset at Tamara because Tamara:
A.
pretends she's not smart
B.
Talks to much
C.
is too quiet
D.
is talktive
【单选题】She didn't come to his birthday party just ______what he had said to her the day before. [ ]
A.
because
B.
because of
C.
as result of
D.
thanks for
【单选题】Tamara, a female African American employee, arrives at work one day to find in the break room a note on a coffee pot which reads "Tamara Only." Later, she finds a similar sign on a bathroom door. Whic...
A.
exclusion
B.
mockery
C.
intimidation
D.
sexual harassment
【单选题】—Sorry, I don't know what the teacher said just now. —He asked Maria _____. [ ]
A.
how long she usually spends on her homework
B.
what she was doing these days
C.
why didn't Mike come to the meeting yesterday
D.
when the speech will begin
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