下面哪个不是气体状态参数（）。A、体积 B、温度 C、压力 D、比容

下列关于肺泡表面活性物质的叙述，错误的是

A．可降低肺泡表面张力
B．可维持肺泡容积相对稳定
C．可防止肺水肿
D．使肺弹性阻力减小
E．使肺静态顺应性减小

由于压条的枝条不与（）分离，它能够借助母株供结的水分和养分生根发育。

A.母株

B.主干

C.叶片

D.枝梢

中雨是指24小时降水量为（）。

A.0.1~10.0毫米

B.10.1~25.0毫米

C.25.1~50.0毫米

D.50.1~100.0毫米

《测绘质量监督管理办法》规定，从事测绘产品质量检验工作的测绘产品质量检验人员应通过任职资格考核，达到合格标准，取得( )。

A．注册测绘师资格证
B．测绘计量检定人员资格证
C．测绘专业技术任职资格证
D．测绘产品质量检验员证

Vienna was one of the music centers of Europe during the classical period, and Haydn, Mozart, and Beethoven were all active there. As the (1) of the Holy Roman Empire (which included parts of present-day Austria, Germany, Italy, Hungary, Czech and Slovakia), it was a (2) cultural and commercial center (3) a cosmopolitan character. Its population of almost 250,000 (in 1800) made Vienna the fourth largest city in Europe. All three (4) masters were born elsewhere, but they were (5) to Vienna to study and to seek (6) . In Vienna, Haydn and Mozart became close friends and influenced each other’s musical (7) . Beethoven traveled to Vienna at sixteen to play for Mozart; at twenty-two, he returned to study with Haydn.

Aristocrats from all over the Empire spent the winter in Vienna, sometimes bringing their private (8) . Music was an important part of court life, and a good orchestra was a (9) of prestige. Many of the nobility were excellent musicians.

Much music was heard in (10) concerts where aristocrats and wealthy commoners played (11) professional musicians. Mozart and Beethoven often earned money by performing in these intimate concerts. The nobility (12) hired servants who could (13) as musicians. An advertisement in the Vienna Gazette of 1789 (14) : " Wanted, for a house of the gentry, a manservant who knows how to play the violin well. "

In Vienna there was also (15) music, light and popular in (16) . Small street bands of wind and string players played at garden parties or under the windows of people (17) to throw (18) money. Haydn and Mozart wrote many outdoor entertainment (19) , (20) they called divertimentos or serenades. Vienna’s great love of music and its enthusiastic demand for new works made it the chosen city of Haydn, Mozart and Beethoven.

6（）

A.admission

B.acknowledgement

C.recognition

D.appraisal