简述“妈妈用梳子,梳着我的头发;风是树的梳子,梳着树的头发。”这句儿歌的原有形象与意象。
咏叹调《花之歌》是剧中人物()唱的。 ["#61623;A、卡门","B、艾斯卡密尤","C、阻尼嘎","D、唐何塞"]
论述中西方国家收文处理的不同之处。
网站建设的原则?
1. public class A { 2. public void method1() { 3. B b=new B(); 4. b.method2(); 5. // more code here 6. } 7. } 1. public class B { 2. public void method2() { 3.C c=new C(); 4. c.method3(); 5. // more code here 6. } 7. } 1. public class C { 2. public void method3() { 3. // more code here 4. } 5. } Given: 25. try { 26. A a=new A(); 27. a.method1(); 28. } catch (Exception e) { 29. System.out.print(”an error occurred”); 30. } Which two are true if a NullPointerException is thrown on line 3 of class C?() [" The application will crash."," The code on line 29 will be executed."," The code on line 5 of class A will execute."," The code on line 5 of class B will execute."," The exception will be propagated back to line 27."]
用氧化锆分析仪测氧时,温度波动给仪表带来很大的误差,常见的消除误差的方式有哪几种?