单项选择题

How long does it take for some industries acquiring commercial potential

A．From five to ten years.
B．From six to eight years.
C．From seven to eleven years.
D．From eleven to eighteen years.
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单项选择题
In order to develop his company, the R&.D manager should have a sense of ______.
A．psychological communication
B．market prediction
C．management distribution
D．departmental resources development
单项选择题
The main difference between consumer markets and industrial ones is ______.
A．consumer markets focus on research while industrial ones focus on developing
B．consumer markets focus on tailors while industrial ones focus on medicine
C．consumer markets focus on specific while industrial ones focus on general
D．consumer markets focus on application while industrial ones focus on plan
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