不属于影响液泛速度的因素是（）。A、气液流量 B、流体物性 C、阀孔大小 D、塔板间

完形填空。

     A is a new student. Mr. Wang is asking him some questions. 

W: are new here, am I right?

A: Yes, you are right, Mr. Wang.

W:  1  ?

A: Yes, what are they?

W:   2  ?

A: On July 14, 1983.

W: Where were you born?

A: I was born in Sydney in Australia.

W:   3  ?

A: For about eight years.

W: And  4  ?

A: They were born in Sydney, too.

W: Are they living in China?

A:  5  . He is coming soon.

(    )1. A. May I ask you some questions

           B. Shall I ask you any questions

           C. Can you ask me any questions

           D. Do you have any questions

(    )2. A. Where were you born

           B. When were you born

           C. Who was born on July 14, 1983

           D. Were you born on July 14, 1983

( )3. A. How often did you live there

           B. How did you live there

           C. Why did you live there

           D. How long did you live there

( )4. A. Were your parents born in Sydney, too

           B. Who were born in Sydney

           C. Where were your parents born

           D. When were your parents born

( )5. A. Mum is, but Dad works in Sydney

           B. Mum does, but Dad works in Sydney

           C. Dad is, but Mum works in Sydney

           D. Dad does, but Mum works in Sydney

确认可持续发展原则为国际环境法基本原则的会议是（）。

单纯收缩期高血压是指（）

A.SBP≥160mmHg

B.SBP为140～160mmHg

C.SBP≥140mmHg或DBP<90mmHg

D.SBP≥140mmHg和DBP<90mmHg

E.SBP≥180mmHg

改变电动机主磁通的调速方法

函数ReadDat()的功能是实现从文件IN2.DAT中读取一篇英文文章存入到字符串数组xx中；请编制函数StrOL()，该函数的功能是：以行为单位对行中以空格或标点符号为分隔的所有单词进行倒排。最后把已处理的字符串（应不含标点符号）仍按行重新存入字符串数组xx中，最后调用函数WriteDat()把结果xx输出到文件OUT2.DAT中。例如，原文：You He MeI am a student.结果：Me He Youstudent a am I原始数据文件存放的格式是：每行的宽度均小于80个字符，含标点符号和空格。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 #include #include #include char xx[50][80];int maxline = 0;/* 文章的总行数 */int ReadDat(void);void WriteDat(void);void StrOL(void){}main(){clrscr();if (ReadDat ()) {printf("数据文件 IN2.DAT不能打开！\n\007");return;}StrOL();WriteDat();}int ReadDat(void){FILE *fp;int i = 0;char *p;if((fp = fopen("IN2.DAT", "r")) == NULL) return 1;while(fgets(xx[i], 80, fp) != NULL) {p = strchr(xx [i], ’’\n’’);if(p) *p = 0;i++;}maxline = i;fclose(fp);return 0;}void WriteDat(void){FILE*fp;int i;clrscr();fp = fopen("OUT2.DAT", "w");for(i = 0; i < maxline; i++) {printf("%s\n", xx[i]);fprintf(fp, "%s\n", xx[i]);}fclose(fp);}