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【单选题】
下列关于人类免疫缺陷病毒的特点不正确的是（）A.
分为HIV-1和HIV-2
B.
HIV属于反转录病毒
C.
为RNA病毒
D.
产生抗体多为中和抗体
E.
主要感染CDT 4+ 淋巴细胞
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A.
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B.
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【简答题】在定义类的对象时，C++程序将自动调用该对象的【】函数初始化对象自身，在撤销类的对象时，C++程序将自动调用该对象的【】函数。
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