【单选题】请选出以下程序的输出结果 public class Child extends People { People father; public Child(String name) { System.out.print(3); this.name = name; father = new People(name + ":F"); } public Child() { System.out.print...
【单选题】关于活塞的作用下列说法不正确的是______。
【单选题】给出以下代码,请问该程序的运行结果是什么? class Example{ public static void main(String args[]){ System.out.println(0.0==-0.0); } } 请选择一个正确答案:( )
【多选题】关于气体排放,下列说法正确的是( )。
D.
废气中主要有害成分为:CO、HC、NOX等等
E.
在柴油机中,CO主要是由于燃烧室内局部缺氧或低温造成的
【单选题】关于四冲程柴油机的换气过程的特点,下列说法不正确的是_____.
B.
自由排气靠缸内外的压力差进行,强制排气靠新气驱赶废气
【单选题】请选出以下程序的输出结果 class A { public void func1() { System.out.println("A func1 is calling"); } public void func2() { func1(); } } class B extends A { public void func1() { System.out.println("B func1 is cal...
A.
A func1 is calling B func3 is calling
C.
A func1 is calling A func1 is calling B func3 is calling
D.
B func1 is calling B func3 is calling
【单选题】请选出以下程序的输出结果public class Child extends People {People father;public Child(String name) {System.out.print(3);this.name = name;father = new People(name + ":F");}public Child() {System.out.print(4);}publ...
【单选题】请选出以下程序的输出结果class A {public void func1() {System.out.println("A func1 is calling");}public void func2() {func1();}}class B extends A {public void func1() {System.out.println("B func1 is calling");}pub...
A.
func1 is calling B func3 is calling
B.
func1 is calling B func3 is calling
C.
A func1 is calling A func1 is calling B func3 is calling