The sensitivity factor K of the strain gauge refers to （应变片的灵敏度系数是指____）（）
A. resistance value （电阻值）
B. Relative resistance change of strain gauge caused by unit strain （单位应变引起的应变片相对电阻变化）
C. The relative change of the cross-sectional area of the strain gauge wire （应变片导线截面积的相对变化）
D. Relative change of resistance value of strain gauge wire （应变片电阻值的相对变化）
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Which of the following is among the rewards of being a small business owner（）
A. freedom from fiscal responsibility
B. free time
C. freedom from job-related stress
D. lifestyle freedom
According to the Small Business Administration, one of the most common reasons for starting a business is to _____（）
A. be your own boss
B. develop managerial skills
C. achieve financial security
D. manage team-oriented projects
The free market system was espoused by _____ in his book The Wealth of Nations（）
A. Joseph Smith
B. Eli Whitney
C. Adam Smith
D. Benjamin Franklin
以下呼吸可见于代谢性酸中毒的是（）
A. Cheyne Stokes呼吸
Biots呼吸
C. Kussmaul呼吸
D. 叹息样呼吸
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