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【单选题】
在题图2-2-1所示的电路中,调整工作点不小心把Rb调到零,这时将会使( )A.
电路进入截止区
B.
电路进入饱和区
C.
三极管烧坏
D.
三极管正常放大
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【单选题】收集需求是为实现项目目标而定义并记录干系人的需求的过程。下列关于收集需求过程的说法都是正确的，除了（）。
A.
仔细掌握和管理项目需求与产品需求，对促进项目成功有重要作用
B.
需求是指发起人、客户和其他干系人的已量化且记录下来的需要与期望
C.
需求是工作分解结构的基础，成本、进度和质量规划也都要在这些需求的基础上进行
D.
需求开发始于对风险登记册中相关信息的分析
【单选题】People always greet each other warmly, ______ their different origins and beliefs.
A.
in regard to
B.
in contrast with
C.
with respect to
D.
regardless of
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【单选题】Which of the following statements can best describe American Internet service?
A.
People have to pay more to get better Internet connections.
B.
It has always been ranked low with regard to its broadband performance.
C.
Internet used to be regarded as the tool of providing information in America.
D.
Slower speed and higher price will hinder the competitiveness of American Internet.
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