Index error of a sextant is primarily caused by （).A.Improperly correcting the other error

A sextant having an index error that is "off the arc" has a ______.

A.positive correction

B.dip error

C.negative correction

D.semidiameter error

The index error is determined by adjusting the ().

A.Sextant frame

B.Horizon glass

C.Index mirror

D.Micrometer drum

A.Male

B.Female

C.MaleFemale

D.Femaleerror

Which of the four adjustable errors in the sextant is the principle cause of index error ().

A.Telescope not being parallel to the frame

B.Index mirror and horizon glass not being parallel

C.Index mirror not being perpendicular to the frame

D.Horizon glass not being perpendicular to the frame

t is not taken into account？()

A.Bit error distribution B.Frame. erasure distribution C.Handover events D.C/I distribution E.DTX

A、Trading risk

B、Tracking error risk

C、Counterpart credit risk

net Information Server (IIS).As he is configuring the default web server he leaves the default directory as wwwroot.Sven places a document called index html in the directory, then tries to access the directory on a web browser, but the server sends an error message.Which is most likely reason than Sven received an error message？()

A.Files cannot be accessed from wwwroot, it is a virtual directory.

B.Sven needs to create a virtual directory that points to wwwroot.

C.Sven needs to change the default setting to a new directory in order to access the file.

D.Sven’s web server is set to access default HTML rather than index HTML on the default path name.

y（Eno，Hour，Month，Wage）（Hour为工作时长为多少小时，Month表示几月份，Wage为薪水），建立一个视图V-Salary（Eno，Ename，Hour，Month，Wage），并按Eno升序排序的SQL语句为：

（1）CREATE （）

AS SELECT emp.Eno，emp.Ename ，salary.Hour，salary.Month，salary.Wage

FROM emp, salary

WHERE emp.Eno=salary.Eno

ORDER BY ENO

在此视图上查均月工资在3000以上的职工工资情况的SQL语句为：

SELECT Eno，Ename，AVG（Wage）

FROM V-Salary

GROUP BY （）

HAVING AVG(Wage)＞3000

（）

A. CREATE TABLE V-Salary（emp.Eno，emp.Ename，salary.Hour，salary.Month，salary.Wage）

B. CREATE VIEW V-Salary（Eno，Ename，Hour，Month，Wage）

C. CREATE TABLE V-Salary（Eno，Ename，Hour，Month，Wage）

D. CREATE INDEX V-Salary（Eno，Ename，Hour，Month，Wage）

（）

A. Eno B.Ename

C.Month D.Wage

听力原文： The wage gap is a statistical indicator often used as an index of the status of women's earnings relative to men's. It is also used to compare the earnings of other races and ethnicities to those of white males, a group generally not subject to race—or sex—based discrimination. The wage gap is expressed as a percentage(e.g., in 2003, women earned 76% as much as men) and is calculated by dividing the median annual earnings for women by the median annum earnings for men.

The Equal Pay Act was signed in 1963, making it illegal for employers to pay unequal wages to men and women who hold the same job and do the same work. At the time of the EPA's passage, women earned just 58 cents for every dollar earned by men. By 2003, 40 years later, that rate had only increased to 76 cents, an improvement of less than half a penny a year. Minority women fare the worst. African-American women earn just 65 cents to every dollar earned by white men, and for Hispanic women that figure drops to merely 54 cents per dollar.

If working women earned the same as men(those who work the same number of hours; have the same education, age, and union status; and live in the same region of the country), their annual family incomes would rise by $4,000 and poverty rates would be cut in half.

(30)

A．Males.

B．Ethnic males.

C．White males.

D．Women.

定义并不完整。请按要求完成下列操作，将程序补充完整。

(1)完成构造函数的定义，把数据成员size初始化为参数s的值，数据成员buffer指向动态申请的int型size大小的空间。请在注释“//**1**”之后添加适当的语句。

(2)完成拷贝构造函数的定义，注意解决多次删除的问题。请在注释“//**2**”之后添加适当的语句。

(3)完成成员函数elem的定义，该函数返回buffer的第ndx个元素的值，注意如果ndx超界，请输出“error in index”。请在注释“//**3**”之后添加适当的语句。

(4)完成析构函数的定义，要求先将字符d打印在屏幕上，再释放buffer指向的空间。请在注释“//**4**”之后添加适当的语句。

输出结果如下：

1234567891012345678910dd

注意：除在指定的位置添加语句外，请不要改动程序中的其他语句。

源程序文件test13_3清单如下：

include＜iostream.h＞

include＜stdlib.h＞

class Vector

{

public：

Vector(int s=100)；

Vector(Vector &v)；

int &elem(int ndx)；

void display()；

void set()；

～Vector()；

protected：

int size；

int *buffer；

}；

Vector：：Vector(int s)

{

// ** 1 **

}

Vector：：Vector(Vector &v)

{

// ** 2 **

for(int i=0； i＜size； i++)

{

*(buffer+i)=*(v.buffer+i)；

}

}

int &Vector：：elem(int ndx)

{

// ** 3 **

{

cout＜＜"error in index"＜＜endl；

exit(1)；

}

return buffer[ndx]；

}

void Vector：：display()

{

for(int j=0；j＜size；j++)

cout＜＜elem(i)＜＜endl；

}

void Vector：：set()

{

for(int j=0；i＜size；j++)

elem(j)=j+1；

}

Vector：：～Vector()

{

// ** 4 **

}

void main()

{

Vector a(10)；

Vector b(a)；

a. set()；

b. set()；

a. display()；

b. display()；

}