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【简答题】
钢材是一种不会燃烧的建筑材料，它具有抗震，抗弯等特性。在实际应用中，钢材可以相对增加建筑物的荷载能力，满足建筑设计美感造型的需要，避免混凝土等建筑材料不能弯曲，拉伸的缺陷，因此钢材受到了建筑行业的青睐。重庆某钢材有限公司在去年3月至6月份销售甲、型号的钢材，已知甲种钢材每个月的售价y 1 （(百元/吨)）与月份x之间的关系可用下表表示： 甲种钢材的进价为30百元/吨，甲种钢材的销量P与月份x的关系式为P=300x；乙种钢材每个月的售价y 2 （百元/吨）与月份x之间的关系满足二次函数y 2 ＝ax 2 +x＋c，已知乙种钢材的售价从3月的56百元/吨降至4月的53.5百元/吨，乙种钢材的进价为35百元/吨，乙种钢材3至6月平均每月的销量为1600吨。 （1）请观察题中的表格，用我们所学过的一次函数、反比例函数或者二次函数写出y 1 与x之间的函数关系式；并求出y 2 与x的函数关系式； （2）已知该公司每个月在销售钢材时每吨需支出2百元的物流费用，问该公司销售甲、钢材哪个月获得的总利润最大，最大利润是多少百元？ （3）在去年7月至今年3月这9个月中，若每个月需固定支出甲、钢材的仓储成本各600百元，甲、钢材的进价每吨均比去年6月上涨1百元，每吨支出的物流费用变为2.5百元。该公司将甲、钢材的售价均在去年6月的基础上提高了p％，与此同时甲种钢材每月的销售量均在去年6月的基础上减少了0.5p％，乙种钢材每月的销售量均为1500吨，这样一来，该公司完成了去年7月至今年3月总利润459000百元的销售任务，请你参考以下数据，估算出p的值（精确到0.1）。（92.1 2 =8482.41，92.2 2 =8500.84，92.3 2 =8519.29，92.4 2 =8537.79）。
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A.
Low productivity levers in the mills.
B.
Unhappiness of the staff who worked in the steel mills.
C.
Cheaper foreign products becoming more available.
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A.
Argentines are fiercely proud of their culture and heritage and saw Nick's lack of enthusiasm to take in the sights as an insult.
B.
Nick's insistence that it take place that day was seen as over zealous - a trait considered undesirable.
C.
Their initial offer to delay it two days was their way of allowing enough time to get to know Nick. As a virtual 'stranger' none of the executives felt the desire to engage with him.
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【简答题】From the time each of my children started school, I packed their lunches. And in each lunch ,I___26_____ a note. Often written on a napkin (餐巾)， it might be thank you for a ____27____ moment ,a remind...
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A.
that; at
B.
in which; over
C.
which; about
D.
where; to
【多选题】How does the writer introduce each method of compliance?
A.
By definition
B.
By categorizing each method
C.
By giving examples
D.
By analyzing each method from the psychological perspective.
【单选题】Nick had an unusually clever mind, so his success had been ______ and never in doubt.
A.
hoped
B.
asked
C.
promised
D.
expected
【简答题】From the time each of my children started school, I packed their lunches. And in each lunch, I 11 a note. Often written on a napkin ( 餐巾), it might be a thank-you for a 12 moment, a reminder of somet...
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