我国《保险法》规定，同一保险人不得同时兼营财产保险和人身保险业务。（）
参考答案：对
Ron can type five forms of a test in 4 hours. Joan can type the same five forms in 6 hours. If they work together, how many hours would it take them to type ten forms of a test ？（）
A.A
B.B
C.C
D.D
E.E
下列程序的运行结果是______。 import java.io.*； public class abc public static void main (String arg []) String s1="Hello!"； System.out.println(s1.to Upper Case())；
