题目内容

Whichstatementsconcerningthevalueofamembervariablearetrue,whennoexplicitassignmentshavebeenmade?()

A. Thevalueofanintisundetermined.
B. Thevalueofallnumerictypesiszero.
C. Thecompilermayissueanerrorifthevariableisusedbeforeitisinitialized.
D. ThevalueofaStringvariableis""(emptystring).
E. Thevalueofallobjectvariablesisnull.

查看答案
更多问题

Giventhefollowingcodefragment:publicvoidcreate(){VectormyVect;myVect=newVector();}Whichofthefollowingstatementsaretrue?()

A. Thedeclarationonline2doesnotallocatememoryspaceforthevariablemyVect.
B. Thedeclarationonline2allocatesmemoryspaceforareferencetoaVectorobject.
C. Thestatementonline2createsanobjectofclassVector.
D. Thestatementonline3createsanobjectofclassVector.
E. Thestatementonline3allocatesmemoryspaceforanobjectofclassVector.

提高对学习的认识,增强自觉性就是要进一步()。

A. 增强理论学习的自觉性
B. 增强理论学习的持久性
C. 认识理论学习的重要性
D. 提高理论学习的积极性

终身学习观念包括:()。

A. 树立学习是的工作观念
B. 树立学习是创新的观念
C. 树立学习是竞争力的观念
D. 树立学习是生活的观念

对于脆性材料,抗压强度极限比抗拉强度极限高出许多。()

答案查题题库