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举一反三
【单选题】A monopolistically competitive firm has excess capacity in the long run. This means that it:
A.
produces less than the output at which average total costs are minimized.
B.
produces less than the output at which price and marginal cost are equal.
C.
could produce more by moving to a larger plant.
D.
doesn't maximize profits.
【简答题】Two vectors are defined to be equal if they have the same magnitude and the same dirction. Graphically, this means that they have the same length and are parallel to each other.A consequence of the de...
【单选题】But even here in Paris ________ signs of economic crisis have emerged. [ ]
A.
disturbed
B.
disturbing
C.
encouraging
D.
encouraged
【简答题】病人张某、48岁,企业老总,因工作需要经常加班熬夜,在外应酬,喜食油腻的高蛋白、高脂肪食物,并大量吸烟、饮酒,近来发现体重迅速增加,体力和精力降低。
【单选题】As it is used in the second paragraph of the passage, the word 'migrant' means______.
A.
of visiting as a tourist
B.
of moving officially from one place, job, thing, etc. to another
C.
of moving from one place to another changing one's place of living, esp. for a limited period
D.
of going from place to place, esp. to a long distant place making a journey
【单选题】病人张某,48岁,企业老总,因工作需要经常加班熬夜,在外应酬,喜食油腻的高蛋白、高脂肪食物,并大量吸烟、饮酒,近来发现体重迅速增加,体力和精力降低。对于该病人,最主要的学习需求是
A.
如何减轻工作强度
B.
如何戒烟、戒酒
C.
如何建立正确的生活方式和行为习惯
D.
如何快速减肥
E.
肥胖的不良后果
【单选题】关于早产儿特点,下列哪项是错误的
A.
易发生低血糖、低血钙和低血钠症
B.
易出现晚期酸中毒
C.
呼吸暂停多发生在出生后15天内，都为生理性
D.
肝功不成熟，生理黄疸重
E.
水需要量相对大，每天约120～150ml/kg
【单选题】by the advances in technology, many farmers have set up farms on their land.
A.
Being encouraged
B.
Encouraging
C.
having encouraged
D.
Encouraged
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