单项选择题

干粉灭火器首次维修后每年进行维修，报废期限为年（）

A、3、6
B、2、12
C、2、10

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多项选择题

根据谈判进行的地点不同，可以将谈判分为（）
A.立场谈判   B.客场谈判 C.让步谈判
D.主场谈判   E.中立地谈判 A.
立场谈判 B.
客场谈判 C.
让步谈判    D.
主场谈判    E.
中立地谈判

单项选择题

1.For an economy as a whole, income must equal expenditure because ( )
A、the number of firms is equal to the number of households in an economy.
B、international law requires that income equal expenditure.
C、every dollar of spending by some buyer is a dollar of income for some seller.
D、every dollar of saving by some consumer is a dollar of spending by some other consumer.