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【简答题】
工厂生产甲、产品,由A、B二组人员来生产。A组人员熟练工人比较多,工作效率高,成本也高;B组人员新手较多工作效率比较低,成本也较低。例如, A 组只生产甲产品时每小时生产 10 件,成本是 50 元有关资料如表所示。 二组人员每天正常工作时间都是 8 小时,每 5 天。一内每组最多可以加班 10 小时,加班生产的产品每件增加成本 5 元。 工厂根据市场需求、利润及生产能力确定了下列目标顺序: P 1 :每供应市场甲产品 400 件,乙产品 300 件 P 2 :每利润指标不低于 500 元 P 3 :两组都尽可能少加班, 如必须加班由A组优先加班 建立此生产计划的数学模型。 产品甲 产品乙 效率 ( 件 / 小时 ) 成本 ( 元 / 件 ) 效率 ( 件 / 小时 ) 成本 ( 元 / 件 ) A 组 10 50 8 45 B 组 8 45 5 40 产品售价 ( 元 / 件 ) 80 75
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【单选题】He tried to impress us with his __________ knowledge of wine.
A.
expandable
B.
widened
C.
deep
D.
extensive
【单选题】What does he mean by saying "dress to impress"?
A.
You should wear your wedding suit or dress to the interview to show your respect
B.
You should wear your T-shirt and shorts to feel relaxed
C.
You should hire a stylist to make sure no one get dressed like you in the interview and you will stand out
D.
You should wear a casual shirt and long pants or blue jeans
【简答题】He's always ________ and trying to
impress his classmates.A. showing off B. showing up C. off D. up
【简答题】My first ( impress ) of him was that he was a kind and thoughtful young man .
【单选题】He said all _____ in order to impress her more deeply
A.
this
B.
these
C.
those
D.
it
【简答题】分子生物学检验在实验诊断中的应用有哪些?
【简答题】He gave me a very good ______ (impress) with his neat appearance.
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