单选题A signal derived from a controlled function and returned to the initiating point is called a/an （）.A monitoring signalB inverse signalC reverse signalD feedback signal

题目

单选题

A signal derived from a controlled function and returned to the initiating point is called a/an （）.

monitoring signal

inverse signal

reverse signal

feedback signal

相似考题

1.air－conditioner is a word derived from adding –er to air－condition.()此题为判断题(对，错)。

2.ireland is a traditional culture which has derived from its rich folk heritage. ()

3.The overall transfer function is the ratio of the transform. of the controlled variable to the transform. of ( ).A.the controlled variableB.the reference inputC.the feedbackD.the output variable

4.文中（ 2 ）处正确的答案是（）。A．derived fromB．deviated fromC．was derived fromD．was deviated from

更多“A signal derived from a controlled function and returned to”相关问题

第1题：

When using a hand held smoke signal from a lifeboat, you should activate the signal _____.
A.on the downwind side
B.on the upwind side
C.inside the boat
D.at the stern

正确答案：A
当在当在救生艇上使用手持烟雾信号的时候，你应该使信号处在_____。
第2题：

使用VC6打开考生文件夹下的工程test25_1，此工程包含一个源程序文件test25_1.cpp，但该程序运行有问题，请改正程序中的错误，使程序的输出结果如下：
privatel from derived1:30
privatel from derived2:30
源程序文件test25_1.cpp清单如下：
/***************found******************/
include＜iostream.h＞
class base
{
protected:
int privatel;
public:
base(int p){privatel=p;}
};
/****************found*******************/
class derived1:public base
{
public:
derivedl(int p1):base(p1){};
int get_private(){return private1;}
}
class derived2:virtua1 public base
{
public:
derived2(int p2):base(p2){};
int get_private(){return private1;}
};
class derived12:public derived1,public derived2
{
public:
/****************found*******************/
derived12(int p1,int p2,int pb):derived1(p1), base(pb), derived2(p2){};
};
void main()
{
derived12 d(10,20,30);
cout＜＜"privatel from derived1:"＜＜d.derived1::get_private();
cout＜＜"\nprivatel from derived2:"＜＜d.derived2::get_private();
cout＜＜endl;

正确答案：(1)错误：includeiostream.h＞正确：#includeiostream.h＞ (2)错误：class derivedl:public base 正确：class derivedl:virtual public base (3)错误：derived12(int p1int p2int pb):derivedl(p1)base(pb)derived2(p2){}；正确：derived12(int p1int P2int Pb):derivedl(P1)derived2(p2)base(Pb){}；
(1)错误：includeiostream.h＞正确：#includeiostream.h＞ (2)错误：class derivedl:public base 正确：class derivedl:virtual public base (3)错误：derived12(int p1,int p2,int pb):derivedl(p1)，base(pb)，derived2(p2){}；正确：derived12(int p1,int P2,int Pb):derivedl(P1)，derived2(p2)，base(Pb){}；解析：(1)主要考查考生对于include关键字的掌握，它的正确使用是#include；
(2)主要考查考生对于虚基类的使用，为了正确的显示结果，这里应该使用虚基类的定义，这样在调用函数的时候就可以不产生二义性；
(3)主要考查考生对于初始化参数表中赋值顺序的掌握，它是按照从右至左依次赋值的
第3题：

Given the following function:CREATE FUNCTION emplist () RETURNS TABLE ( id CHAR(6) , firstname VARCHAR(12) , lastname VARCHAR(15) ) LANGUAGE SQL BEGIN ATOMIC RETURN SELECT EMPNO, FIRSTNME, LASTNAME FROM EMPLOYEE WHERE WORKDEPT IN (‘A00‘, ‘B00‘); ENDHow can this function be used in an SQL statement?
A.SELECT TABLE(EMPLIST()) FROM EMPLOYEE
B.SELECT TABLE(EMPLIST()) AS t FROM EMPLOYEE
C.SELECT EMPLIST(id, firstname, lastname) FROM EMPLOYEE
D.SELECT id, firstname, lastname FROM TABLE(EMPLIST()) AS t

参考答案：D
第4题：

Mary has derived a good deal of benefit from her job.

A:obtained
B:accepted
C:bribed
D:produced

答案：A
解析：
第5题：

Returned logistics is the goods flow（）
- A、From sellers to buyers
- B、From buyers to sellers
- C、From outside to inside of any company
- D、From wholesalers to retailers
正确答案:B
第6题：

Given the following function: CREATE FUNCTION emplist （　） RETURNS TABLE ( id CHAR(6) , firstname VARCHAR(12) , lastname VARCHAR(15) ) LANGUAGE SQL BEGIN ATOMIC RETURN SELECT EMPNO, FIRSTNME, LASTNAME FROM EMPLOYEE WHERE WORKDEPT IN ('A00', 'B00'); END How can this function be used in an SQL statement?
- A、SELECT TABLE(EMPLIST()) FROM EMPLOYEE
- B、SELECT TABLE(EMPLIST()) AS t FROM EMPLOYEE
- C、SELECT EMPLIST(id, firstname, lastname) FROM EMPLOYEE
- D、SELECT id, firstname, lastname FROM TABLE(EMPLIST()) AS t
正确答案:D
第7题：

单选题
A signal derived from a controlled function and returned to the initiating point is called a/an （）.
A
monitoring signal
B
inverse signal
C
reverse signal
D
feedback signal

正确答案： A
解析：暂无解析
第8题：

单选题
A line of position derived by radar range from an identified point on a coast will be a(n) （）.
A
straight line
B
arc
C
parabola
D
line parallel to the coast

正确答案： D
解析：暂无解析
第9题：

单选题
You are creating a Windows Forms Application by using the .NET Framework 3.5.You plan to design a new control that will be used on multiple forms in the app.You need to ensure that the control meets the following requirement：（1）It retrieves data from a MSSQL Server 2008 database instance. （2）It uses WPF classes to display data. （3）It uses user-customizable actions when the control is first painted on the form. What should you do？（）
A
Create a new custom class for the control that is derived from the Control class.
B
Create a new custom class for the control that is derived from the UserControl class.
C
Create a new custom class for the control that is derived from the ContentControl class.
D
Create a new custom class for the control that is derived from the ContentPresenter class.

正确答案： B
解析：暂无解析
第10题：

单选题
The monitoring function may serve all of the following purposes except（）
A
instigating corrective action
B
indicating values of controlled variables
C
warning of off-limit conditions
D
providing record of performance

正确答案： D
解析：暂无解析
第11题：

单选题
The name"Canada"is thought to be derived from kanata,an Indian word meaning（）
A
a guitar
B
a meeting place
C
a settlement
D
a piece of land

正确答案： B
解析：暂无解析
第12题：

单选题
While reading the muster list, you see that "three short blasts on the ships whistle and the same signal on the general alarm bells" is the signal for （）.
A
abandon ship
B
dismissal from drills
C
fire and emergency
D
man overboard

正确答案： B
解析：暂无解析
第13题：

The stadium will have been built by the time she ( ) from Japan
A.returns
B.will return
C.return
D.returned

参考答案：A
第14题：

The monitoring function may serve all of the following purposes except
A.instigating corrective action
B.indicating values of controlled variables
C.warning of off-limit conditions
D.providing record of performance

正确答案：A
第15题：

A line of position derived from a loran reading is a section of a(n) ______.
A.straight line
B.arc
C.parabola
D.hyperbola

正确答案：D
第16题：

The name"Canada"is thought to be derived from kanata,an Indian word meaning（）
Aa guitar
Ba meeting place
Ca settlement
Da piece of land

C
略
第17题：

Which two statements are true about broadband cable （HFC） systems？（）
- A、Cable modems only operate at Layer 1 of the OSI model.
- B、Cable modems operate at Layers 1 and 2 of the OSI model.
- C、Cable modems operate at Layers 1， 2， and 3 of the OSI model.
- D、A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.
- E、A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.
正确答案:B,D
第18题：

You are creating a Windows Forms application by using the .NET Framework 3.5. You plan to develop a new control for the application.The control will have the same properties as a TextBox control.You need to ensure that the control has a transparent background when it is painted on form.You want to achieve this goal by using the minimum amount of development effort.What should you do？（）
- A、Create a new class that is derived from the Control class.Call the SetStyle method in the constructor.
- B、Create a new class that is derived from theTextBox control class.Override the OnPaint method in the constructor.
- C、Create a new class that is derived from the Control class.Set the BackColor property of the control to Transparent.Call the SetStyle method in the constructor.
- D、Create a new class that is derived from theTextBox control class.Set the BackColor property of the control to Transparent in the constructor.Call the SetStyle method in the constructor.
正确答案:D
第19题：

单选题
The author states that the will and the passions of the people _____.
A
can be effectively controlled by the people themselves
B
should determine government policies
C
can be controlled only by a power that exists apart from the people and is not subject to that will and those passions
D
cannot be controlled

正确答案： B
解析：
本题的依据是第一段中间的几句话“Society requires not only that the passions of individuals should be subjected, but that even in the mass and body, as well as in the individuals, the inclinations of men should frequently be thwarted, their will controlled, and their passions brought into subjection. This can only be done by a power out of themselves”。从中可知C项是正确答案。
第20题：

单选题
The frequency of an alternator is controlled from the main switchboard by adjusting the（）
A
frequency meter
B
voltage regulator
C
governor control
D
sychroscope switch

正确答案： C
解析：暂无解析
第21题：

单选题
A line of position derived from a loran reading is a section of a(n) （）.
A
straight line
B
arc
C
parabola
D
hyperbola

正确答案： B
解析：暂无解析
第22题：

单选题
In the International Code of signals，a group of three letters indicates（）.
A
urgency or an emergency
B
the vessel's national identity signal
C
a group from the general signal code
D
a group from the medical signal code

正确答案： D
解析：暂无解析
第23题：

单选题
Which datatype is returned by the FIND_MENU_ITEM built-in function?（）
A
number
B
Boolean
C
menuitem
D
VARCHAR2

正确答案： B
解析：暂无解析
第24题：

单选题
75. A pardon from B am free from C excuse from D am derived from
A
A
B
B
C
C
D
D

正确答案： C
解析：

单选题A signal derived from a controlled function and returned to the initiating point is called a/an （）.A monitoring signalB inverse signalC reverse signalD feedback signal

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