It takes ____________ to design and engineer a car, from the first sketches and until it hits the road.
A. a few months
B. a few years
C. a few days
D. a few hours
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At Ford's Cologne plant, they produce a Fiesta every ______ seconds.
A. 92
B. 94
C. 86
D. 88
It is looking with ____________ to get the best fit of the door to the vehicle.
A. vernier calipers
B. computers
C. T-squares
D. laser lines
公共建筑高度大于（ ）米为高层建筑，大于（ ）米为超高层建筑。
A. 7，24
B. 24,50
C. 24,100
D. 50,100
梁受力向下弯曲时，梁的上部纤维（ ），下部纤维（ ）。
A. 受拉伸长受压缩短
B. 受压缩短受拉伸长
C. 受压伸长受拉缩短
D. 受拉缩短 受压伸长
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