皮皮学，免费搜题
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搜题
【单选题】
以下哪项不是充电系统的常见故障( )A.
不充电
B.
充电电流过大或过小
C.
充电不稳
D.
行放电
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知识点：
皮皮学刷刷变学霸
举一反三
【多选题】Which of the following statements about declaration are true？（）
A.
Declaration of primitive types such as boolean， byte and so on does not allocate memory space for the variable.
B.
Declaration of primitive types such as boolean， byte and so on allocates memory space for the variable.
C.
Declaration of nonprimitive types such as String， Vector and so on does not allocate memory space for the object.
D.
Declaration of nonprimitive types such as String， Vector ans so on allocates memory space for the object.
【简答题】The accurate declaration for the export goods is made by the ( ).
【简答题】It was Jefferson who wrote the Declaration of Independence．