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【多选题】
获得性免疫具有哪些特点（多选）A.
对抗原无针对性
B.
发挥作用比先天免疫早
C.
对抗原有针对性
D.
不可以遗传
E.
个体差异明显
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】Some creative people receive more stimuli from the outside world or ignore less of it, so they are more likely to suffer from ______ .
【简答题】库存管理的概念
【简答题】若线性方程组AX=b有无穷个解，则系数矩阵的秩r与未知量的个数n具有关系【图片】(填文字：大于，小于，或者等于)
【单选题】Which of the following is one of the other stimuli present in a buyer's environment apart from a marketing stimuli?
A.
product stimuli
B.
cultural stimuli
C.
price stimuli
D.
place stimuli
E.
promotion stimuli
【单选题】Which of the following is a marketing stimuli?
A.
economic stimuli
B.
price stimuli
C.
technological stimuli
D.
social stimuli
【单选题】Which of the following is a marketing stimuli?
A.
economic stimuli
B.
price stimuli
C.
technological stimuli
D.
social stimuli
E.
cultural stimuli
【简答题】主要刺激(focal stimuli)
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