单项选择题
（）外部中断 0 允许中断的 C51语句为 ______。 A.
RI=1 B.
TR0=1 C.
IT0=1 D.
EX0=1
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未知题型
听力原文：W: Good morning, can I help yon?M: Yes, I'm looking for a Christmas present for my girl frienD.W: So you'd like to choose a dress here?M: But I don't know what's in now?W: How about this white dress? It's a new arrival.M: That's nicE.How much does it cost?W: $250.M: Mmm, I think that's a little expensivE.W: How about the red one? It's 20% off, now just $80.M: Great, I think I'll take this onE.(8)A.In a book storE.B.In a hotel.C.In a grocery.D.In a department storE.
A.W:
B.
M:
C.
M:
D.
W:
E.
M:
F.
(8)
A.In
G.
B.In
H.
C.In
I.
D.In -
单项选择题
解决一对多配送的最短路线问题时通常可采用( )方法。 -
多项选择题
利润最大化不是企业最优的财务管理日标，其原因有( )
A.没有考虑企业成本的高低
B.不能直接反映企业创造的收益
C.没有考虑利润与投入资本的关系
D.没有考虑经营收入和经营费用的差额
E.可能使企业产生追求短期利益的行为
