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【单选题】
不属于甘油磷脂的是:A.
卵磷脂
B.
脑磷脂
C.
磷脂酰丝氨酸
D.
神经鞘磷脂
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皮皮学刷刷变学霸
举一反三
【单选题】The primary difference between r2 and the adjusted r2 is that
A.
the adjusted r2 accounts for the total number of variables in the regression model.
B.
the adjusted r2 accounts for the number of independent variables in the regression model.
C.
the adjusted r2 accounts for the number of dependent variables in the regression model.
D.
the adjusted r2 accounts for multicollinearity.
E.
None of the above
【单选题】Which of the following is true according to the text?
A.
The unemployment rate in Japan is relatively high compared with other nations.
B.
The present unemployment rate in Japan is among the highest in its history.
C.
The government has not yet recognized the need to help non-regular workers.
D.
The government is reluctant to take measures to keep the technical workers.
【简答题】The voltage across the resistor R1 is obtained as the same fraction of the total voltage that R1 is of the total resistance.
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