产品成本计算的品种法只适用于单步骤、大量生产的企业。 ()
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It can be inferred from Para. 5 that
A. the Superbus has a sound and viable technological base.
B. satellite-based tracking can keep the Superbus on course.
C. sensors can scan the road for obstacles more than 300 metres ahead.
D. a smart suspension system remembers every spot in the road.
What do we learn about door-to-door mission？
A. The Superbus has a separate door for each of its 30-odd seats.
B. The individual doors allow for rapid loading and unloading of passengers.
C. The individual doors will make predetermined stops flexibly as passengers want.
D. The Superbus will pick up and drop off passengers based on their text-messaged requests.
Which of the following is the best title for this text？
A. The Trail of Disaster.
B. The Economic Crisis.
C. The Hungry People.
D. World Recession and Job Losses.
Which of the following is true about the food price？
A. It falls with the global economic recession.
B. It had been dropping but has rebounded now.
C. It is decisive to the food shortage in poor countries.
D. It determines the family budget.
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