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【单选题】
女性患者,心脏联合瓣膜病 10,发热1月,体温37.2~37.6°C,厌食,消瘦、贫血貌。确诊手段首选( )A.
胸部X线
B.
血培养
C.
测定血红蛋白
D.
心肌酶检查
E.
测定血沉
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举一反三
【单选题】Capacity in excess of expected demand that is intended to offset uncertainty is a:
A.
margin protect
B.
line balance
C.
capacity cushion
D.
timing bubble
E.
none of the above
【单选题】Which of the following is a characteristic of a facility with excess capacity?
A.
Will likely be more efficient per unit of product it produces than one with a lot of unused capacity
B.
Would be very flexible and respond to wide swings in the demands placed on it
C.
Would be considered a high utilization facility
D.
Will have difficulty responding to demand fluctuations
【单选题】The restaurant industry is characterized by excess capacity. This means that:
A.
restaurants are producing more than their profit-maximizing level.
B.
the profit-maximizing level is less than the level that minimizes average total costs.
C.
restaurants are producing less than their profit-maximizing level.
D.
the quantity of restaurant meals supplied exceeds the quantity of restaurant meals demanded.
【单选题】Excess capacity is the
A.
difference between a perfectly competitive firm's and a monopolistically competitive firm's output.
B.
difference between a perfectly competitive firm's and a monopoly's output.
C.
output at the maximum point of the ATC curve.
D.
None of the above answers is correct.
【简答题】过剩生产能力（Excess capacity）
【简答题】A monopolistically competitive firm has excess capacity because in theA. short run its MR exceeds its MC. B. short run its ATC is less than its AVC. C. long run its ATC exceeds its minimum ATC. D. lon...
【单选题】Excess capacity and high advertising expenditures are encountered in
A.
perfect competition.
B.
monopolistic competition.
C.
monopoly.
D.
non-profit competition.
【单选题】患者女性，45岁。因“体检发现右侧嗅觉丧失”来诊。神经系统查体除右侧嗅觉丧失外无阳性发现，颅脑X线片检查：筛板、眶顶骨质吸收变薄，并可见均密度增高块状影覆盖其上。
对明确诊断意义最大的检查是（）
A.
脑电图
B.
脑血管造影
C.
颅脑MRI
D.
颅脑单光子发射计算机断层成像术（SPECT）
E.
E.经颅多普勒（TC
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