【单选题】下列程序的输出是:a=[1,2,3,4,[5,6],[7,8,9]]s=0for f in a: if type(f)==list: for e in f: s=s+e*len(f) else: s+=f*fprint(s)
【多选题】Class TestException 1. public class TestException extends Exception { 2. } Class a: 1. public class a { 2. 3. public String sayHello(String name) throws TestException { 4. 5. if(name == null) {...
A.
Class a will not compile.
B.
Line 46 can throw the unchecked exception TestException.
C.
Line 45 can throw the unchecked exception TestException.
D.
Line 46 will compile if the enclosing method throws a TestException.
E.
Line 46 will compile if enclosed in a try block, where TestException is caught.
【简答题】If A=[7,5,8,9;1,2,45,6],B=[4,7,8,5;6,2,1,4],let C=[A+B],so C=(_);
【单选题】我国东南地区潮湿而西北内陆干燥的气候是收到了()的影响。