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【单选题】
阴道分泌物的采集,哪不恰当的A.
取材前24小时内禁止性交
B.
不要采用盆浴和阴道灌洗
C.
检验技术人员可直接采集标本
D.
需使用消毒棉拭子取材
E.
取材前不要实施阴道局部上药治疗
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反馈参考答案：
举一反三
【单选题】安装软件包 ”forecast” 的命令是 ( )
A.
install.package('forecast')
B.
install.packages(forecast)
C.
install.packages('forecast')
D.
installpackages(‘forecast’)
【单选题】A company had net sales and cost of goods sold of $752,000 and $543,000, respectively. Its net income was $17,530. The company's gross margin ratio equals:
A.
18.9%
B.
24.5%
C.
27.8%
D.
34.7%
E.
35.2%
【判断题】Sparrow Company had net income of $63,000. The company had 9,000 weighted average common shares outstanding. The basic earnings per share equal $7.00 per share.
A.
正确
B.
错误
【判断题】A company had net sales of $545,000 and cost of goods sold of $345,000. Its gross margin equals $890,000.
A.
正确
B.
错误
【单选题】Which of the following related with the forecast is true?
A.
The less data available, the less reliable the forecast
B.
The further into the future, the more reliable the forecast
C.
The pattern of the trend is guaranteed to continue in the future
D.
The pattern of seasonal variation is always not affected by the random variation.
【单选题】Sparrow Company had net income of $63,000. The company had 9,000 weighted average common shares outstanding. The basic earnings per share equal $7.00 per share.
A.
TRUE
B.
FALSE
【简答题】低压电器是用于额定电压在交流________ V 或直流________ V 及其以下的电路中起通断、保护、控制和调节作用的电器 。
【简答题】A．said B．reported C．calculated D．forecast
【简答题】低压电器是用于额定电压交流_V或直流_V的电器
【单选题】The forecast error is:
A.
the difference between this period’s value and the next period’s value
B.
the difference between the average value and the expected value of the response variable
C.
the difference between the explanatory variable value and the response variable value
D.
the difference between the actual value and the forecast
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