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【单选题】
测定氨氮、化学需氧量的水样中加入HgCl2的作用是（）。A.
控制水中的pH值
B.
抑制苯酚菌的分解活动
C.
防止生成沉淀
D.
抑制生物的氧化还原作用
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【简答题】Paragraphs 3-6 Scan this part and discuss in pairs, and list the facts about the life of deer in four seasons.
【简答题】《伤寒论·辨阳明病脉证并治》:问日:何缘得阳明病?答日:太阳病,若发汗,若下,若利小便,此亡津液,胃中干燥,___。不更衣,内实,___,此名阳明也。
【单选题】According to Paragraphs 5 and 6, which of the following is INCORRECT?
A.
The gold rushes brought about more opportunities for crimes.
B.
Banks gained their prosperity in frontier towns after 1849.
C.
After the Civil War, thieves turned to steal cattle and horses.
D.
In Texas, cattlemen had to fight for the access to land and water.
【简答题】下述循环体语句的循环次数为()。
int x=-1;
do
{ x=x*x; } while(!x);A. 1次 B. 2次 C. 无限次 D. 有语法错误
【简答题】天线高度为1.3m、置平误差为0.1°时,可能会产生对中误差_________mm。(结果保留至0.1mm)
【简答题】The following questions refer to information given in paragraphs 1–6. Match them with each paragraph and then answer the following questions.
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