????????ж???

????1??????????????????????????????????(T)

????2??Beta ??????????????????(T)

????3???????????????80%?????????(T)

????4?????????????????????????????????(F)

????5??????????????????????д????????(T)

????6???????????????????????????????????????(F)

????7???????????????????δ????????????????(F)

????8???????????????????????Ρ?(T)

?????????????(??????)??

????1?????й???alpha ???????????????????(AD)

????A.alpha ??????????????μ?

????B.alpha ???????????????μ?

????C.alpha ????????????????

????D.alpha ?????????????????

????2????????????????У?(BC)

????A.?????????

????B.??????????

????C.?????????????

????D.?????????

????3??????????????????(ABCD)

????A.????????????

????B.????????????

????C.???????????

????D.???????????????

????4??10%3=?(A)

????A.1

????B.3

????C.0

????D.10

????5???????????try catch finally???????

?????????????????try????catch?????????finally

??????????try???и?System.exit(0)?????????finally??????ó?????????

???????????

?????????????????????????????____??____????(???????????????)

????????????

????1????в????м?????? ?

??????в?????????????????????????

????????????????

????1?????????????

????2?????

????3?????

????4??????

??????????????????串?? ???ж????? ?????????? ???ж?-???????? ?? ????-?????? ??·?????? ?????????-·??????

????2???????????????λ????

????A??—?????????????????????

????1)??????????????????????????

????2)?????

????3)???????????

????4)???????????μ?????ж?

????5)???????

????6)??????????????

????7)??????????

????B??—???????????????????????

????1)???????

????2)?????????

????3)?????????????????δ????????????????

????C??—??????????????????????

????1)???????????(????????????????????塢??????????)

????2)???????????????

????3)????????????δ?????????п???

????4)???????δ???????

????5)?????????й????????

????3??д???????Singleton??????

????Singleton???????????????Java??ó????У??????Class??????????????

????public class Singleton {

????private Singleton(){}

????//?????????????????????????????????

????//???????private ??????????

????private static Singleton instance = new Singleton();

????//????????????????????class????????????????????

????public static Singleton getInstance() {

????return instance;

????}

????}