【单选题】interface Data { public void load(); } abstract class Info { public abstract void load(); } Which class correctly uses the Data interface and Info class?()
A.
public class Employee extends Info implements Data { public void load() { /*do something*/ } }
B.
public class Employee implements Info extends Data { public void load() { /*do something*/ } }
C.
public class Employee extends Info implements Data { public void load() { /*do something */ } public void Info.load() { /*do something*/ } }
D.
public class Employee implements Info extends Data { public void Data.load() { /*dsomething */ } public void load() { /*do something */ } }
E.
public class Employee implements Info extends Data { public void load() { /*do something */ } public void Info.load(){ /*do something*/ } }
F.
public class Employee extends Info implements Data{ public void Data.load() { /*do something*/ } public void Info.load() { /*do something*/ } }
【简答题】It seems that manufacturers will remain reluctant to make improvements unless ________. A) they can do so as a very low cost B) they find their machines hard to operate C) they have difficulty selling...