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【单选题】
男性,40岁,晚间赴宴归来后突然发作持续性剧烈上腹部疼痛伴恶心呕吐2小时而就诊。体检:T38.50C,Pl02次/min,R24次/min,BPl0.7/6.6kPa,皮肤呈大理石斑状青紫,心肺 (-),上腹部压痛并反跳痛,肠鸣音消失。血清和尿液淀粉酶测定均在正常范围,血白细胞计数15×109/L,中性粒细胞90%,血钙1.82mmol/L,首先应考虑A.
急性胃穿孔
B.
急性肠梗阻
C.
急性出血坏死性胰腺炎
D.
急性胆囊炎
E.
急性腹膜炎
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【简答题】建筑空间组合形式有哪些?
【简答题】External economies外部经济
【单选题】The existence of external economies of scale
A.
may be associated with a perfectly competitive industry.
B.
cannot be associated with a perfectly competitive industry.
C.
tends to result in one huge monopoly.
D.
tends to result in large profits for each firm.
E.
focuses more on individual firms than the industry as a whole.
【多选题】停留服务期间。全陪应做好协助地陪的各项工作,保障旅游者的安全包括一下哪些方面()
A.
汇报旅游团情况，配合地陪做好工作
B.
维护保障游客的安全
C.
检查各站的服务质量
D.
增加游客的购物次数
【单选题】In the presence of external economies of scale, trade
A.
may or may not improve welfare in both countries.
B.
will unambiguously improves welfare in both countries.
C.
will unambiguously worsens welfare in both countries.
D.
will unambiguously worsen welfare in the exporting country and improve welfare in the importing country.
E.
will unambiguously improve welfare in the exporting country and worsen welfare in the importing country.
【单选题】In the presence of external economies of scale, trade
A.
will unambiguously worsens welfare in both countries.
B.
will unambiguously worsen welfare in the exporting country and improve welfare in the importing country.
C.
will unambiguously improves welfare in both countries.
D.
will unambiguously improve welfare in the exporting country and worsen welfare in the importing country.
E.
may or may not improve welfare in both countries
【简答题】36 的8位真值 (1) ,原码是 (2) ,反码是 (3) ,补码是 (4)
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