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單項(xiàng)選擇題

有甲、乙連續(xù)兩項(xiàng)工作，甲工作的最早開始時(shí)間是第4天，乙工作的最早開始時(shí)間是第10天；甲工作和乙工有甲、乙連續(xù)兩項(xiàng)工作，甲工作的最早開始時(shí)間是第4天，乙工作的最早開始時(shí)間是第10天；甲工作和乙工作的持續(xù)時(shí)間分別是4天和5天，則甲工作的自由時(shí)差是（）天

A.0
B.2
C.4
D.6

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多項(xiàng)選擇題

屬于I型超敏反應(yīng)的特征:

A.出現(xiàn)快，消退也快
B.出現(xiàn)功能紊亂性疾病，不出現(xiàn)嚴(yán)重組織細(xì)胞損傷
C.有明顯個(gè)體差異和遺傳背景
D.ABC

In any industry in which repeat business is done with the same parties, there is always a

balance between pushing the limit on any particular negotiation and making sure the other party—and your relationship with him—survives intact. In any industry in which repeat business is done with the same parties, there is always a balance between pushing the limit on any particular negotiation and making sure the other party—and your relationship with him—survives intact.（）

答案：正確