资产组的认定，应当以能否独立生产产品为依据，如果几项资产的组合能独立生产产品，则应当将这些资产的组合认定为资产组。 ()
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In young California during the days of the gold rush______.
A. people usually used a rope as a weapon
B. it was very common to hang people with a rope
C. gold-mining areas were measured by miners with a rope
D. laborers were often whipped with a rope as a punishment
According to the professor, what is one advantage of a survey？
A. It is the least expensive method of research.
B. It does not have to be conducted face-to-face.
C. It provides more information than any other method.
D. It is the most enjoyable method for the researcher.
Listen again to part of the discussion．Then answer the question. Why does the professor ask this:
A. He does not know whether May or Kay is a better manager.
B. He disagrees with what the man says about May and Kay.
C. He wants to invite either May or Kay as a guest speaker.
D. He wants a more satisfactory response from the class.
What is the lecture mainly about？
A. The role of ethylene in plant aging processes
B. The discovery of ethylene by fruit growers
C. Differences between ethylene and other hormones
D. How plant hormones influence growth
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