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【判断题】
设三阶行列式的值为3,则行列式中每个元素都乘以2之后行列式的值为6。A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The purpose of the federal needs analysis is to determine __________.
A.
whether a family is on financial aid
B.
how much of a family's income is discretionary
C.
whether or not a family is below the poverty line
D.
how much families should pay in state and local taxes
【单选题】●To determine whether or not the employee correctly understands the message, the project manager needs to(75). (75)
A.
reduce the filtering
B.
eliminate barriers
C.
obtain feedback
D.
use more than one medium
【单选题】The purpose of the federal needs analysis is to determine.
A.
whether or not a family is below the poverty line
B.
the proportion of not-necessary-expenses in a family's income
C.
whether a family is on financial aid
D.
how much family's should pay in state and local taxes
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