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【简答题】
电路如图所示，设u i =10sinωt(V)，稳压二极管VZ 1 和VZ 2 的稳压值为U z1 =U z2 =6V，试画出传输特性u o -u i 曲线和输出电压u o 的波形，并用PSPICE或Electronics Workbench仿真分析对比。
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举一反三
【单选题】Financial planning:
A.
focuses solely on the short-term outlook for a firm.
B.
is a process that firms employ only when major changes to a firm's operations are anticipated.
C.
is a process that firms undergo once every five years.
D.
considers multiple options and scenarios for the next two to five years.
【单选题】The cycle view of the supply chain is useful when considering operational decisions, because
A.
it categorizes processes based on whether they are initiated in response to or in anticipation of customer orders.
B.
it specifies the roles and responsibilities of each member of the supply chain.
C.
processes are identified as either reactive or speculative.
D.
it focuses on processes that are external to the firm.
E.
it focuses on processes that are internal to the firm.
【多选题】"The Eyes around - had wrung them dry - And Breaths were gathering firm For that last Onset - when the King Be witnessed - in the Room -" About this excerpt, which of the following statements are corr...
A.
It comes from Dickinson's " I Heard a Fly Buzz-When I Died "
B.
The third line used "oxymoron" (矛盾修饰法)
C.
This stanza focuses on the psychological movements of the dying person
D.
This stanza focuses on the reaction of the beloved ones of the dying person
【单选题】The push/pull view of the supply chain is useful when considering strategic decisions relating to supply chain design, because
A.
it categorizes processes based on whether they are initiated in response to or in anticipation of customer orders.
B.
it specifies the roles and responsibilities of each member of the supply chain.
C.
it clearly defines the processes involved and the owners of each process.
D.
it focuses on processes that are external to the firm.
E.
it focuses on processes that are internal to the firm.
【单选题】The push/pull view of the supply chain is useful when considering strategic decisions relating to supply chain design, because
A.
it categorizes processes based on whether they are initiated in response to or in anticipation of customer orders.
B.
it specifies the roles and responsibilities of each member of the supply chain.
C.
it clearly defines the processes involved and the owners of each process.
D.
it focuses on processes that are external to the firm.
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