液下喷射泡沫灭火系统，适用于（）。
A.内浮顶储罐
B.外浮顶储罐
C.水溶性甲、乙、丙类液体储罐
D.非水溶性甲、乙、丙类液体固定顶储罐
参考答案：D
解析：本题考查的是泡沫灭火系统选择基本要求。储罐区泡沫灭火系统的选择，应符合下列规定：烃类液体固定顶储罐，可选用液上喷射、液下喷射或半液下喷射泡沫系统；水溶性甲、乙、丙液体的固定顶储罐，应选用液上喷射或半液下喷射泡沫系统；外浮顶和内浮顶储罐应选用液上喷射泡沫系统；烃类液体外浮顶储罐、内浮顶储罐、直径大于18m的固定顶储罐以及水溶性液体的立式储罐，不得选用泡沫炮作为主要灭火设施。
（文科）某高校从参加今年自主招生考试的学生中随机抽取容量为50的学生成绩样本，得频率分布表如下：
（2）为了选拔出更优秀的学生，高校决定在第三、四、五组中用分层抽样法抽取6名学生进行第二轮考核，分别求第三、四、五各组参加考核人数； （3）在（2）的前提下，高校决定在这6名学生中录取2名学生，求2人中至少有1名是第四组的概率． | ||||||||||||||||||||||||||||
血浆晶体渗透压主要来自（）.
A.葡萄糖
B.Na+
C.K+
D.球蛋白
E.清蛋白
—Flora has made much progress these days.
— , and ___________.
A．So has she; so you have
B．So she has; so have you
C．So has she; so have you
D．So she has; so you have
补写出下列名句名篇中的空缺部分。
(1) 故木受绳则直，__________________ ，君子博学而日参省乎己，__________________ 。（荀子《劝学》）
(2)是故__________________，__________________。闻道有先后，术业有专攻，如是而已。（韩愈《师说》）
(3)__________________，羡长江之无穷。 ____________ ，抱明月而长终。（苏轼《赤壁赋》）
Barack Obama made his victory speech in Chicago after a hard-fought campaign.
Democratic Senator Barack Obama has won the US presidential election, and will become the 44th President of the United States-the first African-American in the country's history to do so.
President-elect Obama marked his victory with a speech to a crowd of tens of thousands of people in his hometown of Chicago.
Obama described his election as a "defining moment' in the history of the United States, saying that "change has come to America".
The BBC's spokesman in Washington says that in electing Barack Obama, the American people have expressed their unhappiness with the present state and rejected their country's historical racial divisions.
The Australian Prime Minister summed up how many people felt when he congratulated President-elect Obama.
“Forty-five years ago Martin Luther King had a dream of an America where men and women would be judged not on the colour of their skin but on the content of their character. Today what America has done is turn that dream into a reality," said Prime Minister Kevin Rudd.
President-elect Obama will not take office until 20th January next year. However, when he does become president, he will face many serious challenges, including two foreign wars, climate change and what he has described as " the worst financial crisis （经济危机）in a century."
But the mood of the country is optimistic, according to most commentators, and Obama himself appears to enjoy the challenge.
"The road ahead will be long. Our climb will be difficult. We may not get there in one year or even in one term, but America--I have never been more hopeful than I am tonight that we will get there," said the next President of the United States.
41. Which of the following is TRUE according to the passage?
A. It was not a difficult process for Obama to win the US presidential election.
B. The American people welcome the historical racial divisions.
C. What Martin Luther King dreamed about America has come true.
D. After the election Obama didn't say anything about his victory.
42. According to the passage, it seems that in the United States, _____________.
A. people may still be treated unequally because of their color of skin.
B. people are experiencing two civil wars.
C. Americans are enjoying the economy developing.
D. People are not satisfied with President-elect.
43. From the last two paragraphs, we can learn that________________.
A. the attitude of American people to their country's future is not clear.
B. Obama has confidence in American future and ready to face it.
C. the road to America will be long.
D. the change of America is not hard to achieve.
44. What is probably the best title to the passage?
A. Historical presidential election B. The first African-American President
C. Change has come D. Comments about America
