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【单选题】
速率常数 k 是 。A.
无单位的参数
B.
单位为 mol • dm −3 • s −1 的参数
C.
单位为 mol 2 • dm −3 • s −1 的参数
D.
单位不定的参数
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反馈参考答案：
举一反三
【单选题】《威尼斯商人》的三条情节线索不包括()
A.
罗兰佐与杰西卡携款私奔
B.
巴萨尼奥与鲍西娅三匣择亲
C.
安东尼奥与夏洛克围绕“一磅肉”的诉讼
D.
培尼狄克与贝特丽斯的爱情。
【单选题】Which of the following is a disadvantage of using secondary data?
A.
Gathering secondary data is costly.
B.
Collecting secondary data is time consuming.
C.
Few sources exist for secondary data.
D.
It is not accurate enough.
【多选题】Disadvantages of Secondary Data includes:
A.
Secondary data is something that seldom fits in the framework of the marketing research factors.
B.
Accuracy of secondary data is not known.
C.
Data may be outdated.
【单选题】Secondary data:
A.
is available both internally and outside the firm.
B.
may not be specific enough to answer the question under consideration.
C.
is often all that is needed to solve a problem.
D.
should be considered before primary data is collected.
E.
all of the above.
【单选题】Secondary data is:
A.
Data that does not provide any information
B.
Data collected for another purpose
C.
Data collected specifically for the purpose of the survey being undertaken
D.
Data collected by post or telephone, not by personal interview
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