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【多选题】
可作经皮吸收促进剂的有()A.
液状石蜡
B.
硬脂酸
C.
山梨酸
D.
表面活性剂
E.
月桂醇硫酸钠
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参考解析：
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皮皮学刷刷变学霸
举一反三
【单选题】What is the purpose of seasonally adjusting the values in a time series?
A.
To obtain an instant estimate of the degree of seasonal variation
B.
To obtain an instant estimate of the trend
C.
To ensure that seasonal components total zero
D.
To take the first step in a time series analysis of the data
【判断题】TIME SERIES models rely on judgment in an attempt to incorporate qualitative or subjective factors into the forecasting model.
A.
正确
B.
错误
【判断题】Synchronic linguistics deals with a series of language phenomena at the same time.()
A.
正确
B.
错误
【判断题】TIME SERIES models attempt to predict the future by using historical data.
A.
正确
B.
错误
【单选题】A time series is
A.
the length of a business cycle.
B.
a macroeconomic aggregate that does not lead or lag the business cycle.
C.
data that is subject to revision.
D.
a sequence of dated measurements.
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