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多项选择题在J2EE中,如果a是b的父类,b是c的父类,c是d的父类,他们都在包mypackage 中。则以下正确的是()

A、<jsp:usebean id=”mybean” scop=”page” class=”mypackage.d” type=”b”> 

B、<jsp:useBean id=”mybean” scop=”page” class=”mypackage.d” type=”Obiect”/> 

C、<jsp:useBean id=”mybean” scop=”page” class=”mypackage.d” type=”mypackage.a”/> 

D、<jsp:usebean id=”mybean” scop=”page” class=”mypackage.d” type=”a”/>

  • B,C
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