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【单选题】
二极管电路如图所示,图中的二极管的工作状态是( )A.
正向导通
B.
反向截止
C.
反向击穿
D.
不能确定
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【简答题】关闭当前程序的快捷键是___________,多任务切换的快捷键是___________,启动任务管理器的快捷键是___________。
【单选题】Suppose we developed the following least squares regression equation: . What can we conclude?
A.
The dependent variable increases 3.5 for each unit increase in X.
B.
The equation crosses the Y-axis at 2.1.
C.
If X = 5, then is 14.
D.
There is a significant positive relationship between the dependent and independent variables.
【单选题】Which of the following is not an advantage of selfsourcing?
A.
It increases the speed of systems development.
B.
It analyses the various design alternatives which lead to subpar IT systems.
C.
It increases end user participation and sense of ownership.
D.
It improves requirements determination.
【简答题】Unit 2 Part 2 Practice A (page 26) Dialogue Product Source of information Willingness to establish business relations Buyer (importer) Seller (exporter) 1 (1) market survey yes (2) 2 (3) Chamber of Co...
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