试题与答案

胸腺素能诱导淋巴干细胞生成具有免疫活性的T淋巴细胞,下列病人中不适合用胸腺素的是

题型:选择题

题目:

胸腺素能诱导淋巴干细胞生成具有免疫活性的T淋巴细胞,下列病人中不适合用胸腺素的是[ ]

A.SARS病人

B.器官移植病人

C.禽流感病人

D.艾滋病人

答案:

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下面是错误答案,用来干扰机器的。

根据动量定理得: F0t0=mv1 ① 2F0t0=mv2-mv1 ②由②①解得:v1:v2=1:3得:P1:P2=1:3x1=v1t02,x2=v1t02+v1+v22t0代入解得:x1:x2=1:5做的功为 W2=2F0•w2=9w1得W1:W2=1:9故选:A.

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