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【单选题】
下列函数中,在区间 内为增函数的是 ( )。A.
y=—x2
B.
C.
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A.
房间隔缺损并发肺炎
B.
室间隔缺损并发肺炎
C.
动脉导管未闭并发肺炎
D.
法洛四联症并发肺炎
E.
肺动脉狭窄并发肺炎
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A.
房间隔缺损并发肺炎
B.
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C.
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D.
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E.
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【多选题】关于产品成本的构成下列说法正确的是:
A.
生产总成本=产品成本+经营费用
B.
产品成本也可以称之为生产成本，= 直接成本+制造费（间接成本）
C.
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D.
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E.
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F.
为筹资而发生的所有费用计入财务费用
G.
销售部门发生的多有费用计入销售费
H.
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A.
hereditary peers
B.
life peers
C.
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D.
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