海船船员考试
单选题The quantity or condition which is measured and controlled is known as the （）A controlled variableB manipulated variableC set pointD control point
题目
controlled variable
manipulated variable
set point
control point
相似问题和答案
第1题：
A feedback is an input ____
A.which governs the state of a variable
B.which provides a visual and audible alarm
C.which indicates values of controlled variables
D.which measures the state of the controlled variable
第2题：
阅读下列程序说明和C++程序，把应填入其中(n)处的字句，写在对应栏内。
【说明】
阅读下面几段C++程序回答相应问题。
比较下面两段程序的优缺点。
①for (i=0; i＜N; i++ )
{
if (condition)
//DoSomething
…
else
//DoOtherthing
…
}
②if (condition) {
for (i =0; i＜N; i++ )
//DoSomething
}else {
for (i=0; i ＜N; i++ )
//DoOtherthing
…
}
程序1优点：程序简洁；缺点：多执行了N-1次逻辑判断，并且程序无法循环“流水”作业，使得编译器无法对循环进行优化处理，降低了效率。 程序2优点：循环的效率高；缺点：程序不简洁。
第3题：
A.Germany
B.Holland
C.France
D.Switzerland
第4题：
B. Semi-controlled activities.
C. Communicative activities.
D. Problem-solving activities.
第5题：
Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?
A.accidental discharge of oil
B.disposal of oil residues
C.quantity of water produced by F.W.G
D.discharge of dirty ballast or cleaning water from fuel oil tanks
第6题：
b．b．若需得到每种产品的名称和该产品的总库存量，则对应的查询语句为： SELECT name, SUM (quantity) FROMP, I WHERE(27)
A．P. productID=I.productID；
B．P.productID=I.productID ORDER BY name；
C．P.productID=I.productID GROUP BY name；
D．P.productID=I.productID GROUP BY name, quantity；
第7题：
A.Sequence
B.Schema
C.Group
D.View
第8题：
A.If I had time, I would study French
B.If I have time, I will study French
C.If I had had time, I would have studied French
D.If I should have time, I would study French
答案：B
解析：条件句可分为两类，一类为真实条件句，一类为非真实条件句。非真实条件句表示的是假设或实际可能性不大的甚至完全不可能发生的情况，故采用虚拟语气。
A选项中，if+主语+一般过去时表示与现在事实相反，为虚拟语气；B选项中，if引导的是一个一般现在时的条件状语从句，为真实条件句；C选项中，if+主语+had done表示与过去事实相反，为虚拟语气；D选项中，if+主语+should do表示与将来事实相反，为虚拟语气。题干意为：下列条件句中那个是真实条件，所以答案选B。
第9题：
B．Semi-controlled activities.
C．Communicative activities.
D．Problem-solving activities.
第10题：
What does Arun Ross mean by“relatively controlled condition”？( )
B.To mention that Apple Inc.shows their new product under a well designed environment.
C.To imply that FaceID has its limits.
D.To add a context explanation of the interesting demo.
