以下不属于国内航空货物运输保险承保的保险标的是()。①药材②水果③家用电器④动物⑤玻璃制品⑥蔬菜
A.①⑤⑥
B.②③④
C.②④⑥
D.④⑤⑥
参考答案:C
女,28岁。剖宫产术后3天,突发气促、大汗,立即给予面罩氧气吸入(吸入氧浓度50%),不能改善而转科。查体:BP90/60mmHg,R38次/分。端坐呼吸,口唇发绀,双肺布满湿啰音和少量哮鸣音。WBC11.3×109/L,N87%。为进一步诊断最需要的检查是()。
A.腹部B超
B.心脏彩超
C.X线检查
D.动脉血气检查
E.通气/灌注ECT
Which one of the following is most likely to contribute to the presence of monopoly in an industry()
A. Legal barriers to entry into the industry.
B. Diseconomies of scale.
C. An elastic market demand for the product produced by the industry.