欢迎来到牛牛题库网 牛牛题库官网
logo
搜索

单项选择题

依据三次突破原则的切线方法是（）
A、扇形线
B、速度线
C、百分比线
D、甘式线

点击查看答案

相关考题

未知题型
Many instructors believe that an informal, relaxed classroom environment is conducive to learning and innovation. It is not uncommon for students to【51】easygoing and friendly relationships with their professors. The casual professor is not necessarily a poor【52】and is still【53】by students.【54】students may be in a subordinate position, some professors treat them as【55】【56】, no matter how egalitarian professors would like to be, they【57】are in a position of authority.
Professors may establish social【58】with students outside of the classroom,【59】in the classroom they maintain the instructor's rolE.A professor may have coffee one day with students but the【60】day expect them to meet a deadline for the submission of a paper or to be prepared for a discussion or an exam. The professor may give extra attention outside of class to a student in need of help but probably will not treat him or her differently when it【61】to evaluating school work. Professors have several roles in relation【62】students; they may be counselors and friends as【63】as teachers. Students .must realize that when a teacher's【64】changes, they must appropriately【65】their behavior. and attitudes.
Many teachers believe that the responsibility for learning lies【66】the student. If a long reading assignment is given, instructors expect students to be familiar with the information in the reading even if they do not discuss it in class or give an examination. (Courses are not【67】merely for students to pass exams, ) The ideal student is considered to be one【68】is motivated to learn for the sake of learning, not the one interested only in getting high grades. Grade-conscious students may be frustrated with teachers who do not believe it is necessary to grade every assignment. Sometimes homework is returned with brief written【69】but without a gradE.Even if a【70】is not given, the student is responsible for learning the material assigneD.
(51)
未知题型
己知数据文件IN45.DAT中存有200个4位数，并已调用读函数readDat()把这些数存入数组a中，请编制一函数jsVal()，其功能是：把千位数字和十位数字重新组合成一个新的十位数ab(新十位数的十位数字是原4位数的千位数字，新十位数的个位数字是原4位数的十位数字)，以及把个位数和百位数组成另一个新的十位数cd(新十位数的十位数字是原4位数的个位数字，新十位数的个位数字是原4位数的百位数字)，如果新组成的两个十位数ab-cd≥10且ab-cd≤20且两个数均为偶数，同时两个新十位数字均不为零，则将满足此条件的4位数按从人到小的顺序存入数组b中，并要计算满足上述条件的4位数的个数cnt，最后调用写函数writeDat()把结果cnt及数组b中符合条件的4位数输出到OUT45.DAT文件中。
注意：部分源程序已给出。
程序中已定义数组：a[200]，b[200]，已定义变量：cnt。
请勿改动主函数main0、读函数readDat()和写函数writeDat()的内容。
试题程序：
include＜stdio.h＞
define MAX 200
int a[MAX],b[MAX],cnt=0;
void jsVal( )
{
}
void readDat( )
{
int i;
FILE *fp;
fp=fopen('IN45.DAT','r');
for(i=0;i＜MAX;i++)
fscanf(fp,'%d',&a[i]);
fclose(fp);
}
main ( )
{
int i;
readDat();
jsVal();
printf ( '满足条件的数=%d/n' , cnt);
for(i=0;i＜cnt;i++)
printf('%d/n',b[i]);
printf('/n');
writeDat();
}
writeDat()
{
FILE *fp;
int i;
fp=fopen('OUT45.DAT','w');
fprintf(fp,'%d/n',cnt);
for(i=0;i＜cnt;i++)
fprintf(fp, '%d/n',b[i]);
fclose(fp);
}
单项选择题
下列不是当代国际企业发展趋势的选项是（    ）。
A、大多数国家政府加速开放外国直接投资政策。
B、大型跨国公司仍旧主宰着全球经济。
C、俄罗斯是最具活力的外商投资目的地。
D、各国之间的双边协定和投资协议签署数量显著增加。
微信小程序免费搜题

All Rights Reserved 版权所有©牛牛题库网(nntiku.com)

备案号：湘ICP备2022003000号-1

微信扫一扫,加关注免费搜题

微信扫一扫,加关注免费搜题