皮皮学，免费搜题
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搜题
【单选题】
下列哪项不是传染病的基本特征A.
由特异性病原体所致
B.
具有一定传染性
C.
有流行性
D.
有感染后免疫性
E.
病后获终身免疫
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Please go ahead and ______________ the next two carriages.
A.
put
B.
pull
C.
push
D.
pass
【简答题】P: Excuse me. Can I ask something about high-speed train? C: . P: How often does high-speed train go to Nanjing? C: . P: How long does it take? C: ...
【简答题】Please go ahead and ____________(穿过) the next two carriages.
【简答题】自动选型有一个好处,当更改继电器( ) 时,通过自动选型选择( )的继电器后,原理图中继电器的所有连接点会( )。
【单选题】听力原文：M:Be quiet, please. Can I remind you what you should do? W: Certainly. Go ahead, please. M:Don't touch the electricity and put everything in order. OK? W:Sure! Can you guess what the man is?
A.
Maybe a teacher.
B.
Maybe a student.
C.
Maybe a meeting organizer.
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