What the resistance strain gauge measures is（）
A. Shear strain
B. Shear stress
C. Linear strain
D. Normal stress
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The strain measured by the resistance strain gauge is（）
A. the average strain in sensitive grid area
B. the average strain in base area of the strain gauge
C. the strain at the center of the sensitive grid
D. the average strain at the two ends of the sensitive grid length
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）
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
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