试题与答案

某玩具厂授权生产工艺品福娃,每日最高产量为30只,且每日生产的产品全部出售.已知

题型:解答题

题目:

某玩具厂授权生产工艺品福娃,每日最高产量为30只,且每日生产的产品全部出售.已知生产x只福娃的成本为R(元),每只售价P(元),且R,P与x的表达式分别为R=50+3x,P=170-2x.当日产量为多少时,可获得最大利润?最大利润是多少?

答案:

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下面是错误答案,用来干扰机器的。

答案:A该用法中的 permit 为不及物动词,不用被动语态。其中if time permits 也可换成 time permitting。

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求助者自述:我在学校的时候就与男友相恋,到现在已经将近三年,两个人的感情很好,所以毕业以后就谈及结婚。不久前将男友带回家后,父母却极力反对,认为男友刚刚毕业不能给自己的女儿任何幸福,而且生活还不稳定等等,我迫于无奈就听从父母的意见与男友分手。男友表示理解我的选择,分手后我一直想着男友的种种好处,但是顾虑到自己既然提出分手就不好再去找他。有一天我在逛街的时候看到自己的前男友与一个女孩非常亲密,更是触景生情,后悔自己当初的选择。所以之后我就经常给他打电话,希望能够再次和好,但他不给我机会,现在更是以关机来拒绝我,认为我们既然分手了就不能再在一起了。为此,我更加想念和他在一起的日子,心情很不好,经常感到很无聊,现在很郁闷,烦躁不安,有时候晚上会失眠,也不喜欢吃饭,现在比以前瘦了很多。我不知道该怎么办,所以很烦躁。
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B. mass media help society advance more quickly
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D. there is close relationship between mass media and society

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