下列不属于血液感染常见病原菌的是
A．脑膜炎奈瑟菌B．大肠埃希菌C．伤寒沙门菌D．福氏志贺菌E．铜绿假单胞菌
参考答案：D
Within the context of the UN Convention on Contracts for the International Sale of Goods, explain:
(b) when acceptance becomes effective. (5 marks)
