业主方的项目管理任务中()是项目管理中的最重要的任务。 ["安全管理","进度控制","合同管理","质量控制"]
英国多数想成为托儿所保姆的人都必须参加()
置石
英国家庭开端计划的创立人是()
public class Car { private int wheelCount; private String vin; public Car(String vin) { this.vin = vin; this.wheelCount = 4; } public String drive() { return “zoom-zoom”; } public String getInfo() { return “VIN: “+ vin + “wheels: “+ wheelCount; } } And: public class MeGo extends Car { public MeGo(String vin) { this.wheelCount = 3; } } What two must the programmer do to correct the compilation errors?() [" insert a call to this() in the Car constructor"," insert a call to this() in the MeGo constructor"," insert a call to super() in the MeGo constructor"," insert a call to super(vin) in the MeGo constructor"," change the wheelCount variable in Car to protected"," change line 3 in the MeGo class to super.wheelCount = 3;"]
原油含水的主要危害有哪些?