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You create a data block based on a relation table containing a REF column. You select the REF column for your form module. Which statement about the REF column is true?（）
A . It is created as a nondisplay item.
B . The Lock Record property is set to Yes.
C . It cannot be referenced in item level triggers.
D . It is placed on the canvas with the highest sequence number.
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在Excel中输入公式时，如出现“#REF！”提示，表示（）。
A . 运算符号有错
B . 没有可用的数值
C . 某个数字出错
D . 引用了无效的单元格
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下面对REF设备的描述正确的是（）。
A . REF是计算机显示卡可参考使用的设备
B . REF是Direct3D提供的一种参考光栅设备，它能以软件运算方式完全支持Direct3DAPI
C . REF是一种光栅处理设备，可以支持复杂的3D图形处理
D . REF是一种图形处理设备，可以快速的处理复杂的顶点运算
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You create a data block based on a relational table containing a REF column. You select the REF column for your form module. What is true about the items based on the REF column attributes?（）
A . The Query Only property is set to Yes.
B . The Conceal Data property is set to Yes.
C . The Insert Allowed property is set to Yes.
D . The Update Allowed property is set to Yes.
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Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be placed in the （）
A . manual position
B . bus neutral position
C . raise voltage position
D . transfer positio
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（） is provided to alternators, in the event of prime mover failure to ensure that the alternator does not act as a motor.
A . Reverse current protection
B . Reverse power protection
C . Synchronising device
D . Frequency meter
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ZXSDR B8300的CC板REF接口是（）。
A . GPS天线接口
B . 外部通信端口
C . 时钟扩展口
D . 调试端口
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REF542Plus由（）和作为单独控制单元的（）两部分组成。
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若ADC0809模拟量输入电压范围为0～5V时，引脚REF（+），REF（-）接地，分辨率为（）
A . 19.6mv
B . 4.9mv
C . 9.8mv
D . 39.2mv
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数控系统回零方式（REF）的操作按钮为（）。
A .https://assets.asklib.com/images/image2/2017083110271556975.jpg
B .https://assets.asklib.com/images/image2/2017083110273110289.jpg
C .https://assets.asklib.com/images/image2/2017083110274862336.jpg
D .https://assets.asklib.com/images/image2/2017083110280669316.jpg
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Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes（） as prime mover.
A . gas turbine
B . diesel engine
C . steam engine
D . gasoline engine
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如果单元格显示#REF!,这表示（ ）
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下面程序段输出的结果是什么class Sample{static void Swap(ref int x, ref int y){int tmp;tmp = x; x = y; y = tmp;}static void Main(string[] args){int a = 30, b = 40;Swap(ref a, ref b);Console.WriteLine(\{0},{1}\, a, b);Console.ReadKey();}}
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The
VIP customer can take advantage of discounted room rates on a “first-come,
first-served” basis.
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下面程序的运行结果是include＜iostream．h＞void main（){int num=1；int &ref=num；ref=ref+2；c
下面程序的运行结果是 include＜iostream．h＞ void main() { int num=1； int &ref=num； ref=ref+2； cout＜＜num； num=num+3； cout＜＜ref＜＜end1； }
A．13
B．16
C．36
D．33
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在Excel中输入公式时，如出现“REF！”提示，表示（）
A．运算符号有错
B．没有可用的数值
C．某个数字出错
D．引用了无效的单元格
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下面程序的运行结果是（)。include＜iostream．h＞ void main{int num=1：int&ref=num； ref
下面程序的运行结果是()。
include＜iostream．h＞ void main
{
int num=1：
int&ref=num； ref=ref+2：
cout＜＜num： num=num+3： cout＜＜ref＜＜endl：
}
A.13
B.16
C.36
D.33
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以下关于ref和out的描述哪些项是正确的？
A．使用ref参数，传递到ref参数的参数必须最先初始化。
B． 使用out参数，传递到out参数的参数必须最先初始化。
C． 使用ref参数，必须将参数作为ref参数显式传递到方法。
D． 使用out参数，必须将参数作为out参数显式传递到方法。
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在EXCEL输入公式时，如出现“REF!”提示，表示是（)。
A．A.运算符号有错
B．B.没有可用的数值
C．C.某个数字出错
D．D.引用了无效的单元格
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在EXCEL2003输入公式时，如出现“REF！”提示，表示（）
A．运算符号有错
B．没有可用的数值
C．某个数字出错
D．引用了无效的单元格
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下面程序的运行结果是include＜iostream.h＞Void main(){int num＝1;int &ref＝num;ref＝ref＋2;cout ＜ ＜ num;num＝num＋3;cout ＜ ＜ ref ＜ ＜endl;}
A．13
B．16
C．36
D．33
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如果Excel工作表中的单元格显示“REF!”，表示（）。
A．该单元格中是公式，内容待计算
B． 该单元格的数据超过单元格宽度
C． 数据类型和单元格不匹配
D． 该单元格数据是导出数据，原始数据被删除
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What is indicated about Dream Movers, Inc.？
A．It only serves local companies.
B．It has its own airplane.
C．It has highly skilled employees.
D．It is a brand new company.
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At first glance, there is little in Horton to attract people. The other nearby towns have much more to offer: Bradfield has its river and historic buildings, while Newtown has shops and entertainment. The buildings of Horton look dirty and unloved. For shops, there is a small supermarket, a few bargain shops, a bakery which, strangely, does not sell bread and a florist which has one stand of sadlooking flowers. Even so, Horton has several advantages over its neighboring towns.
Firstly, it has a country park. Four thousand years ago, this was an important fort. There are no historic remains here now, but there are wonderful views over the countryside. On sunny weekends you can often see kids out with their parents, kicking balls or flying kites.
There aren’t many job opportunities in Horton, and the roads to nearby cities aren’t really fast, but there are excellent rail links. You can be in London in an hour and a half, and other cities are less than an hour away. That means that parents can earn a good salary and still get home in time to spend the evenings with their families. Houses in Horton aren’t pretty, but they’re functional and cheap. The streets are quiet and safe, and there are plenty of parks and playgrounds. It has a library, three primary schools and a secondary school, St.Mark’s. It is friendly and offers a wide range of subjects and activities to children of all abilities and backgrounds. The town also has a swimming and a sports centre, and the community halls hold regular clubs and events for people of all ages.
C-21. What is the writer’s main purpose？
A、To explain what tourists can do in Horton.
B、To explain why Horton is a good place to live in.
C、To explain why Horton is not as pleasant as other towns.
D、To describe the history of Horton.
C-22.Which part of Horton does the writer find disappointing？
A、The shops.
B、Country park.
C、 Transport links.
D、The schools.
C-23. Which of the following is NOT the advantage of Horton？
A、Plenty of parks and playgrounds.
B、Historical buildings.
C、The quiet and safe streets.
D、Functional and cheap houses.
C-24. What advantages does Horton bring to workers？
A、There are plenty of jobs available in the town.
B、You can drive to nearby cities in a short time.
C、You can get to several cities quickly by train.
D、Working conditions are better here than in other towns.
