纬度38。地区的多层住宅建筑的平屋面防水、保温构造,下列哪一种构造层次正确?( )A.1.保护层2.防水层3.找平层4.保温层5.找坡层6.隔汽层7.找平层8。钢筋混凝土屋面板 B.1.刚性保护层2.隔离层3.防水层4.找平层5.保温层6.找坡层7.隔汽层8.找平层9.钢筋混凝土屋面板 C.1.刚性保护层2.防水层3.找平层4.保温层5.找坡层6.钢筋混凝土屋面板 D.1-保护层2.防水层3.找平层4.保温层5.找坡层6.钢筋混凝土屋面板
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烟叶成熟的特征从哪几方面判断:1.()、2.()、3.()、4.()、5.()、6.()
1. public class Employee { 2. String name; 3. double baseSalary; 4. Employee(String name, double baseSalary) { 5. this.name = name; 6. this.baseSalary = baseSalary; 7. } 8. } And: 1. public class Salesperson extends Employee { 2. double commission; 3. public Salesperson(String name, double baseSalary, 4. double commission) { 5. // insert code here 6. } 7. } Which code, inserted at line 7, completes the Salesperson constructor?() A、 this.commission = commission;B、 superb(); commission = commission;C、 this.commission = commission; superb();D、 super(name, baseSalary); this.commission = commission;E、 super(); this.commission = commission;F、 this.commission = commission; super(name, baseSalary);
1. public class Target { 2. private int i = 0; 3. public int addOne() { 4. return ++i; 5. } 6. } And: 1. public class Client { 2. public static void main(String[] args) { 3. System.out.println(new Target().addOne()); 4. } 5. } Which change can you make to Target without affecting Client?() A、 Line 4 of class Target can be changed to return i++;B、 Line 2 of class Target can be changed to private int i = 1;C、 Line 3 of class Target can be changed to private int addOne() {D、 Line 2 of class Target can be changed to private Integer i = 0;
1. public interface A { 2. public void doSomething(String thing); 3. } 1. public class AImpl implements A { 2. public void doSomething(String msg) { } 3. } 1. public class B { 2. public A doit() { 3. // more code here 4. } 5. 6. public String execute() { 7. // more code here 8. } 9. } 1. public class C extends B { 2. public AImpl doit() { 3. // more code here 4. } 5. 6. public Object execute() { 7. // more code here 8. } 9. } Which statement is true about the classes and interfaces in the exhibit?() A、 Compilation will succeed for all classes and interfaces.B、 Compilation of class C will fail because of an error in line 2.C、 Compilation of class C will fail because of an error in line 6.D、 Compilation of class AImpl will fail because of an error in line 2.
已知圆弧的起点A(5.,0),终点B(0,5.),圆心O(0,0),则下列选项中,位于该圆弧上的坐标点是()A、(4.,3.)B、(3.,4.)C、(4.5,4.5)D、(4.,4.)E、(3.5,4.)
遇到这些情况应洗手? 1.吃饭服药前 2.搂抱婴幼儿 3.便前、便后 4.做完清洁卫生后 5.接触钱币后 6.外出回家