（1）分析判断A和B 各是什么物质，写出各自的化学式。 （2）写出①～⑦各步反

党组织决定重要问题，可以表决，也可以不表决。( )

第II卷（共二部分，共25分）

第一部分：短文改错（满分10分）

假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，要求你在错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧）, 并在其下面写上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1. 每处错误及其修改均仅限一词；

2. 只允许修改10处，多者（从第11处起）不计分。

例如：

It was very nice to get your invitation to spend  ∧ weekend with you . Luckily

the

I was completely free then, so I’ll to say “yes”. I arrive in Bristol at around 8 pm in

am                                                             on

Friday evening.

There is not doubt that the earth is becoming warmer. All scientist subscribe to the view the increase in the earth’s temperature is due to burning of fossil fuels. They also agree that it is the burning of more and more fossil fuels that have resulted in this increase in carbon dioxide. However, the attitudes of scientists to this rise are complete different. On the one hand, Dr. Foster thinks about that the trend may be a catastrophe; on the another hand, there are those, like George Hambley, that are opposed to this view, believed that we should not worry about high levels of carbon dioxide in the air.

已知在文件IN34.DAT中存有100个产品销售记录，每个产品销售记录由产品代码dm(字符型4位)、产品名称mc(字符型10位)、单价dj(整型)、数量s1(整型)、金额je(长整型)几部分组成。其中，金额=单价×数量可计算得出。函数ReadDat()的功能是读取这100个销售记录并存入数组sell中。请编制函数SortDat()，其功能要求：按产品代码从大到小进行排列，若产品代码相同，则按金额从大到小进行排列，最终排列结果仍存入结构数组sell中，最后调用函数WriteDat( )把结果输出到文件OUT34.DAT中。
注意：部分源程序已给出。
请勿改动主函数main()、读函数ReadDat()和写函数WriteDat()的内容。
试题程序：
#include＜stdio.h＞
#include＜mem.h＞
#include＜string.h＞
#include＜conio.h＞
#include＜stdlib.h＞
#define MAX 100
typedef struct

char dm[5];
char mc[11];
int dj;
int s1;
long je;
PRO;
PRO sell[MAX];
void ReadDat();
void WriteDat();
void SortDat()

void main ()

memset(sell,0,sizeof sell));
ReadDat();
SortDat();
WriteDat();

void ReadDat ()

FILE *fp;
char str[80],ch[11];
int i;
fp=fopen ( "IN34. DAT", "r" );
for (i=0; i＜100; i++)

fgets(str,80,fp);
memcpy (sell [i] .dm, str, 4);
memcpy(sell[i] .mc,str+4,10 ;
memcpy (ch, str+14,4);
ch[4]=0;
sell [i] .dj =atoi (ch);
memcpy (ch, str+18,5);
ch[5]=0;
sell [i] . s1=atoi (ch);
sell [i] .je=(long)sell[i].dj*sell[i] .s1;

fclose (fp);

void WriteDat ()

FILE *fp;
int i ;
fp=fopen ( "OUT34. DAT", "w" );
for (i=0; i＜100; i++)

fprintf(fp,"%s %s %4d %5d %101d\n", sell Ii] .dm, sell [i] .mc, sell [i] .dj,
sell[i] .s1,sell [i] .je);

fclose (fp);

简述牙尖交错位正常的标志。

复合材料风管采用法兰连接时，法兰与风管板材的连接应可靠，其绝热层不得外露，不得采用降低板材强度和绝热性能的连接方法。