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【单选题】
设X线管的阳极倾角为θ，下列公式正确的是（）A.
实际焦点 = 标称焦点 *cos θ
B.
标称焦点 = 实际焦点 *sin θ
C.
实际焦点 = 标称焦点 *sin θ
D.
标称焦点 = 实际焦点 *cos θ
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反馈参考答案：
举一反三
【单选题】The term planning implies all of the following EXCEPT______.
A.
Defining an organization's goals and objectives
B.
Establishing an overall strategy for goal achievement
C.
Providing directions for ethical behaviors
D.
Developing a series of plans to coordinate activities
【单选题】C1. Which is an important job responsibility for a middle manager?
A.
performing tasks that are not related to long-term goals
B.
helping top managers define goals
C.
translating goals defined by top managers into action
D.
defining the organization's long-term goals
【单选题】Which is an important job responsibility for a middle manager?
A.
Defining the organization's long-term goals
B.
Translating goals defined by top managers into action
C.
Helping top managers define goals
D.
Performing tasks that are not related to long-term goals
【单选题】Which is an important job responsibility for a middle manager?
A.
performing tasks that are not related to long - term goals
B.
helping top managers define goals
C.
translating goals defined by top managers into action
D.
defining the organization’s long - term goals
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