base相关变形

3/3/2015

(109) QUESTION 109

The contents of the raw data file EMPLOYEE are listed below: ----|----10---|----20---|----30 Ruth 39 11 Jose 32 22 Sue 30 33

John 40 44

The following SAS program is submitted: data test;

in file' employee';

input employee_ name $ 1-4;

if employee_ name = 'Sue' then input age 7-8; else input idnum 10-11; run;

Which one of the following values does the variable AGE contain when the name of the employee is \

A. 30 B. 33 C. 40

D. . (missing numeric value)

QUESTION 110

The c

10Base-T与100Base-TX的区别

BASE前的数字表示网络的数据传输率，比如说：10BASE指数据传输率为10Mbps，1000BASE为1000Mbps

BASE指基带传输，即未经过调制，不能复用的传输，与其对应的BROAD指宽带传输(多用于有线电视网)

BASE后的字母或数字指的是传输介质，反应介质特点，比如说10BASE-T中的T指双绞线，10BASE-5指传输距离500米(即粗缆) IEEE标准共有以下几种:

10BASE-5：粗缆。最大传输距离500米，使用AUI连接器连接或使用收发器电缆和收发器(MAU)进行连接。

10BASE-2：细缆。实际传输距离为185米，使用BNC连接器(T型和N型)。

10BASE-T：双绞线。传输距离100米，使用RJ45连接器。

10BASE-F：光纤。分为FP，FL，FB 三种链接类型，FP使用无源集线器连接，传输距离500米，FB使用有源连接器，传输距离3000米，FL可以使用多个中继器，可以进一步延长器传输距离。

100BASE-TX：双绞线，使用两对非屏蔽双绞线或两对1类屏蔽双绞线连接，传输距离100米

100BASE-T4：4对3类非屏蔽双绞线，传输距离100米 100BASE

Knowledge Base of DataStage Usage 1. Generallly, for the new parallel job, the attribute as “Enable Runtime Column Propagation

for new links” should be un-checked. Otherwise, there will be data-type compatibility issue in the director log after the running.

2. We can use below wizard to connect to the related database and import the table

definitions firstly. Then in the source/target, we can just import the columns base on the available table definitions.

1

3. Generally, in the table definition, for the “extended” attribut

1.The following SAS program is submitted:

data WORK.TOTAL; set WORK.SALARY;

by Department Gender;

if First.<_insert_code_> then Payroll=0; Payroll+Wagerate;

if Last.<_insert_code_>; run;

The SAS data set WORK.SALARY is currently ordered by Gender within Department.

Which inserted code will accumulate subtotals for each Gender within Department? A. Gender

B. Department

C. Gender Department D. Department Gender

Answer: A

-------------------------------------

2.Given t

An analysis of historic production trends in Australian

base metal mining

Gavin M.Mudd ?

Department of Civil Engineering,Institute for Sustainable Water Resources,Monash University,Clayton,Victoria 3800,Australia

Received 22August 2005;accepted 29May 2006

Available online 19January 2007

Abstract

The base metal mining sector,including copper,lead –zinc –silver and nickel,has been a prominent and critical feature of the Australian minerals industry.The various mines and fields have been producers of world significance,including Brok

1.The following SAS program is submitted:

data WORK.TOTAL; set WORK.SALARY; by Department Gender;

if First.<_insert_code_> then Payroll=0; Payroll+Wagerate;

if Last.<_insert_code_>; run;

The SAS data set WORK.SALARY is currently ordered by Gender within Department.

Which inserted code will accumulate subtotals for each Gender within Department? A. Gender

B. Department

C. Gender Department D. Department Gender

Answer: A

-------------------------------------

2.Given t

SAS Base认证考试—70题(61-70)

Q 61

Consider the data step: data WORK.TEST; infile 'c:\\class1.csv' dsd; input Name Sex

Age Height Weight;

if Age NE 16 and Age NE 15 then Group=1; else Group=2; run;

Which statement produces a functionally equivalent result for assigning Group a value? A. if Age not in(15,16) then Group=1; else Group=2; B. if (Age NE 16) or (Age NE 15) then Group=1; else Group=2; C. where Age not between 15 and 16 then Group=1; else Group=2; D. both A or C will work. 答案：A

本题知识点：IF语句、IN的使用 参考第17

第七章 弯曲变形

1．长L的钢筋混凝土梁用绳向上吊起，如图所示，钢绳绑扎处离梁端部的距

离为x。梁内由自重引起的最大弯矩值 Mmax为最小时的x值为：

12 （A）L / 2； （B）L / 6；

（C）2?1L/2； （D）2?1L/2；

正确答案是 。

x x

L

2．两根梁尺寸，受力和支承情况完全相同，但材料不同，弹性模量分别为E1 和E2，且E1=7E2，则两根梁的挠度之比y1y2为： （A）1 / 14； （B）1 / 7；

（C）1 / 49； （D）1 / 7；

正确答案是 。 3．图示梁欲使C点挠度为零，则P与q的关系为：

（A）P = q l / 2； （B）P = 5

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车架的焊接变形及减小变形的措施

标签：焊接车架变形整形焊缝

车架的焊接变形及减小变形的措施

摩托车车架多数采用复杂管、板式焊接结构，是摩托车的支撑骨架，在整车中既要满足众多车体零件安装的要求，又要保证车辆行驶平稳，因此对车架的结构尺寸和形状精度要求较高。摩托车车架焊接后往往会出现变形，不但直接影响整车装配及整车性能，还可能降低车架结构的承载能力引发事故，因此制造中限制和消除焊接变形非常重要。控制摩托车车架的焊接变形主要从设计和工艺2个方面解决，现探讨如何控制车架焊接变形的措施。

影响车架变形的因素和焊接变形的种类

1、影响因素

影响车架焊接变形的因素有很多，主要有以下几点：

a)焊接工艺方法：不同的焊接方法将产生不同的温度场，形成的热变形也不相同。一般来说自动焊比手工焊加热集中，受势区窄，变形较小；CO2气体保护焊焊丝细，电流密度大，加热集中，变形小，比手工焊更适合于车架焊接。

b)焊接参数（焊接电流、电弧电压、焊接速度）：焊接变形随焊接电流和电弧电压增大而增大，随焊接速度增快而减小，其中电弧电压的作用明显。因此低电压、高速大电流密度的自动焊变形较小。

c)焊缝数量和断面大小：焊缝数量愈

1.The following SAS program is submitted:

data WORK.TOTAL; set WORK.SALARY; by Department Gender;

if First.<_insert_code_> then Payroll=0; Payroll+Wagerate;

if Last.<_insert_code_>; run;

The SAS data set WORK.SALARY is currently ordered by Gender within Department.

Which inserted code will accumulate subtotals for each Gender within Department? A. Gender

B. Department

C. Gender Department D. Department Gender

Answer: A

-------------------------------------

2.Given t