转子流量计是以压降不变，利用节流面积的变化来检测流量的大小，即转子流 量汁采用的是恒压降、变节流面积的流量检测法。
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转子流量计中转子的平衡条件是转子在流体中的重力等于流体因流动对转子 所产生的作用力。
A. 对
B. 错
Successful businesses are keenly focused on their
A. customers.
B. managers.
C. creditors.
D. bureaucrats.
Empowerment means:
A. giving employees the authority to make decisions.
B. making certain that employees always defer to management when making decisions.
C. hiring employees that do not require training due to the costly nature of this activity.
D. asking employees to write the policies which govern their jobs.
The statistical study of human population to learn its size, density, and characteristics is called
A. psychographics.
B. econometrics.
C. demographics.
D. geometrics.
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