点燃笑气-乙炔焰前,一定要先点燃()作为过渡。

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问题:

点燃笑气-乙炔焰前,一定要先点燃()作为过渡。

考点:油品分析工考试高级油品分析工考试高级油品分析工考试题库
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下列程序运行后的输出结果是______。
#include<stdio.h>
main()
int k=1,s=0;
do
if((k%2)!=0)continue;
s+=k;k++;
whiIe(k>10);
printf("s=%d\n",s);

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人体内某种细胞可近似地看作球体,它的直径为0.000 000 156m,将0.000 000 156用科学记数法表示为   

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分馏和蒸馏其作用有何不同?两种操作的装置有何不同?

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In June 1985, two British mountaineers Joe Simpson and Simon Yates made the first-ever climb of the 21,000-foot snow-covered Siula Grande mountain in Peru. It was an exceptionally (26) job, but nothing compared to what was to (27) . Early in the process, Simpson (28) and broke his right knee. Yates could have (29) him but managed to find a way of (30) him down the mountains on a rope in a series of difficult drops. Then Simpson fell into a crevasse and Yates eventually had no (31) but to cut the (32) , completely convinced that his friend was now (33)

In his book on the (34) , Joe Simpson wrote:

(35) I looked at the distant moraines, I know that I must at least try I would probably (36) there among those rocks. If I died, well, that wasn’t so (37) , but I wouldn’t have (38) waited for it to happen. The (39) of dying no longer affected me as it had in the crevasse at first. I now had a chance to (40) it and struggle against it.

The survival of Yates himself was (41) . That Simpson somehow found a way of (42) out of the crevasse after 12 hours and then crawled and (43) himself six miles back to camp, (44) three days and might without food or drink, would be considered as a heroic fiction. But in fact it was so (45) .

28().

A. bent

B. fell

C. raised

D. survived

题型:填空题

工程质量保修期限,应( )的时间确定。

A.按当事人双方具体约定

B.按法规规定标准

C.由双方约定且不低于法定标准

D.参照行业通常习惯

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