简述气相色谱法测定总烃和非甲烷烃时，以氮气为载气测定总烃时，如何消除氧的干扰。

One day, a young man asked Albert Einstein, the great German scientist, which the secret of success was. The scientist  41_  him that the secret of success is hard work. A few days 42____  the young man asked him the   43  question again. Einstein was very   44  . He did not say   45  , but wrote a few  46  on a piece of paper and handed it to the young man. The young man looked   47  the piece of paper. On it was written: A=X+Y+Z.“What   48  this mean?”asked the young man.“A means success,”  said the old scientist.“X means hard work, Y means good methods, and Z means   49  talking and start to   50  .

小题1:A. told                B. said             C. talked      

小题2:A. ago       B. before     C. later

小题3:A. easy       B. good       C. same

小题4:A. worried     B. happy      C. angry           

小题5:A. anything    B. something    C. nothing        

小题6:A. words      B.  sentence    C. word   

小题7:A. on       B. up               C. down           

小题8:A. will     B. shall               C. does           

小题9:A. go on    B. stop                  C. enjoy             

小题10:A. work   B. read                   C. write      

避免生出有遗传缺陷孩子的措施是

A．晚婚

B．晚育

C．少生

D．优生

有以下程序void swap(char*X,char,*y){char t；t=*X；*X=* Y；*Y=t；} main(){char*s1="abc",*s2="123"；swap(s1,s2)；printf("％S,％s＼n",s1,s2)；}程序执行后的输出结果是【 】。

A．123,abc

B．abc,123

C．1bc,a23

D．321,cba

曲轴安装偏心夹板后不须进行找正

开采厚煤层综采中位，底位放顶煤时，采用的劳动组织形式是（）。

A.追机工作

B.段落工作

C.混合工作

D.平行工作