Whichtwodemonstrateencapsulationofdata？（）
A. Memberdatahavenoaccessmodifiers.
B. Memberdatacanbemodifieddirectly.
C. Theaccessmodifierformethodsisprotected.
D. Theaccessmodifiertomemberdataisprivate.
E. Methodsprovideforaccessandmodificationofdata.
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Whichstatementsconcerningtherelationshipsbetweenthefollowingclassesaretrue？（）classFoo{intnum；Bazcomp=newBaz（）；}classBar{booleanflag；}classBazextendsFoo{Barthing=newBar（）；doublelimit；}
ABarisaBaz.
B. AFoohasaBar.
C. ABazisaFoo.
D. AFooisaBaz.
E. ABazhasaBar.
Whichtwocandirectlycauseathreadtostopexecuting？（）
A. Exitingfromasynchronizedblock.
B. Callingthewaitmethodonanobject.
Callingthenotifymethodonanobject.
D. CallingthenotifyAllmethodonanobject.
E. CallingthesetPrioritymethodonathreadobject.
以下哪种情况需要化疗患者选择中心静脉通路：（)
A. 持续静脉给药
B. 输入发疱剂药物
C. 不了解药物性质
D. 非发疱类和非刺激性药物
E. 输入刺激性强的药物
A:May I know who's calling？ B:Yes,you can I'm Xiaoyan（)
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