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【单选题】
有一种 “生物活性绷带” , 其原理是先让细胞在特殊膜片上增殖 5~7天后 , 将膜片敷到患者伤口上 , 膜片会将细胞逐渐 “释放”到伤口处 , 并促进新生皮肤生长 , 达到愈合伤口的目的。下列有关叙述中 , 错误的是 ( )A.
人的皮肤烧伤后易引起感染 ， 主要是非特异性免疫机能受损所致
B.
种植在膜片上的细胞样本最好选择来自本人的干细胞
C.
膜片 “释放”的细胞能与患者自身皮肤愈合 ， 与两者细胞膜上的糖蛋白 有关
D.
若采用异体皮肤移植会导致排斥反应 ， 原因是抗体对移植皮肤细胞有杀伤作用
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【单选题】Which of the following statement about “proposition” is not true?
A.
A proposition is a reason used to support the position.
B.
A proposition can be a fact or an opinion.
C.
A proposition should be a fact.
D.
A proposition may be further supported by evidence.
【单选题】A complex proposition consists of:
A.
Two atomic propositions joined by “and”
B.
Two subjective propositions joined by “but”
C.
Two alliterative phrases joined by clever phrasing
D.
One very long proposition.
【单选题】Which definition of Value Proposition is correct?
A.
A value proposition describes your target markets, areas of expertise, product guarantees and methodology.
B.
A value proposition describes your pricing strategy and the proposed revenue it will achieve.
C.
A value proposition describes the benefits your product brings to customers and what customers receive versus what they are willing to pay.
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