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【简答题】
图所示电路,设Ui=sinωt(V),V=2V,二极管具有理想特性,则输出电压Uo的波形应为图示____图。
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举一反三
【单选题】He doesn’t work but he gets a good _______ from his investments.
A.
wage
B.
earnings
C.
income
D.
salary
【单选题】The boy is the equal of the girl, _____ intelligence is concerned, but he doesn’t work hard at all.
A.
as far as
B.
as soon
C.
as well as
D.
as long as
【单选题】He doesn’t work but he gets a good ______ from his investments.
A.
wage
B.
income
C.
earning
D.
salary
【简答题】Diagram the outer-shell electronic structures of P and F. Indicate how bonding occurs between P and F to give PF 3 . What molecular shape would you expect?
【单选题】Most electronic devices of this kind, ______ manufactured for such purposes, are tightly packed.
A.
that are
B.
as are
C.
which is
D.
it is
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