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【单选题】
问以下哪个类的定义是合法的? 有接口定义: package business; interface Info { public void show(); }A.
package impl; import business.*; class A extends Info { }
B.
package impl; import business.*; class A implements Info{ public void show(){ } }
C.
package business; import business.*; class A implements Info{ public void show(){ } }
D.
package business; import business.*; class A implements Info{ void show(){ } }
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举一反三
【单选题】Q: What does the first speaker want to do?
A.
He wants to obtain his seaman book and passport.
B.
He wants to show his seaman book and passport.
C.
He wants to give the second speaker's seaman book and passport.
D.
He wants to see the second speaker's seaman book and passport.
【简答题】破坏蛙脑时，探针的进针位置是（），在离体蛙心灌流实验中，蛙心夹夹住心尖组织选择在心脏的（）.蛙心插管的液面高度保持（）
【单选题】Q: What is the first speaker going to do?
A.
Go to the engine room.
B.
Go to test the generator.
C.
Go ahead to front of the team.
D.
Try the main engine.
【简答题】设计一个Windows窗体应用程序,要求输入成绩计算某个学生奖学金的等级,以三门功课成绩为评奖依据。符合条件者只能获得高的那一项奖学金。标准如下: 符合下列条件之一的可获一等奖: (1) 平均分不低于90分者。 (2) 有两门成绩不低于95分,且第三门功课成绩不低于70分者。 符合下列条件之一的可获二等奖: (1) 平均分大于85分者。 (2) 有一门成绩不低于95分,且另两门功课成绩不低于78分...
【单选题】Q: What does the first speaker want to do?
A.
He wants to check the operation of the emergency generator.
B.
He wants to operate the emergency generator.
C.
He usually is in charge of the generator.
D.
He is a motorman.
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