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【简答题】
a=(−2, 3),b=(6, 4)是否垂直 ____ 。
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反馈参考答案：
举一反三
【单选题】What does Steve Marriott say about staff contacting managers?
A.
Managers sometimes fail to respond promptly.
B.
Managers don't want to be disturbed in their work.
C.
Staff may be uncertain about when it is appropriate to do so.
【单选题】What managers should be involved in the control process?
A.
upper management
B.
middle managers
C.
systems managers
D.
first-line managers
E.
all managers
【单选题】Who should meet with the speaker?
A.
Managers who need extra help.
B.
Managers who want to volunteer.
C.
Managers interested in a promotion.
D.
Managers who are willing to be transferred.
【单选题】143 In small companies, project managers and line managers are:
A.
Never the same person
B.
Always the same person
C.
Sometimes the same person
D.
Always in disagreement with each other
E.
Forced to act as their own sponsors
【单选题】In small companies, project managers and line managers are:
A.
. Never the same person
B.
. Always the same person
C.
. Sometimes the same person
D.
Always in disagreement with each other
E.
Forced to act as their own sponsors
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