患者，男，30岁。冠折2/3，已行根管治疗，根稳固，患者咬合紧，牙合力大，宜选用的修

The Science Museum is near the school __________ the right. [ ]

A. on

B. at

C. in

（66） is a method of constructing a project schedule network diagram that uses boxes or rectangles, referred to as nodes, to represent activities and connects them with arrows that show the dependencies.This method includes following types of dependencies or precedence relationships: （67） , the initiation of the successor activity, depends upon the completion of the predecessor activity.（68） , the initiation of the successor activity, depends upon the initiation of the predecessor activity.

A．F-S

B．F-F

C．S-F

D．S-S

在焊接坡口选用时，要考虑到加工方便，焊接生产率、焊接变形等因素，若以减少焊接变形应选坡口为（）型。

A.V

B.X

C.Y

D.K

下列程序中，给出两个整数2和3，分别求2除以3和2乘以3的结果，要求调用类ex19_1的方法method()来输出相应的结果，请将程序补充完整。程序运行结果如下。
0.6666666666666666
6
源程序文件代码清单如下：
public class exl9 1

public static void main(String args[])

int n1=2,n2=3;
ex19_1 obj19_1=new ex19_1();
obj19_1.

public void method(int x,int y)

System.out.println(______);
System.out.println(______);

公司《收费人员微笑服务标准》中露八齿的动作要领是什么？