1.下列何者總體變數是存量(stock)變數?
(A)居住性投資支出(ridti sment)
(B)全國儲蓄(national saving
(C)政府移轉收入(government transfer)
(D)勞動投入(labor input)

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統計: A(0), B(1), C(0), D(0), E(0) #2853529