【单选题】The returns are not certain, _____the invesment is worth a try.
【简答题】变频器运行控制端子中,FWD代表 ,REV代表 ,STOP代表 。
【单选题】获取各级各类的教师资格,普通话水平最低要达到哪个标准?
【单选题】以下程序的运行结果是class Person{public Person(){System.out.println(“this is a Person”);}}public class Teacher extends Person{private String name=”tom”;public Teacher(){System.out.println(“this is a teacher”);s...
A.
this is a Person this is a teacher tom
B.
this is a teacher this is a Person tom