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【简答题】
The year was 1932. Amelia Earhart was flying alone from North America to England in a small single-engined aeroplane. At midnight, several hours after she had left Newfoundland, she ran into bad weather. To make things worse, her altimeter failed and she didn’t know how high she was flying. At night, and in a storm, a pilot is in great difficulty without an altimeter. At times, her plane nearly plunged into the sea. Just before dawn, there was further trouble. Amelia noticed flames coming from the engine. Would she be able to reach land? There was nothing to do except to keep going and to hope. In the end, Amelia Earhart did reach Ireland, and for the courage she had shown, she was warmly welcomed in England and Europe. When she returned to the United States, she was honored by President Hoover at a special dinner in the White House. From that time on, Amelia Earhart was famous. What was so important about her flight? Amelia Earhart was the first woman to fly the Atlantic Ocean alone, and she had set a record of fourteen hours and fifty—six minutes. In the years that followed, Amelia Earhart made several flights across the United States, and on each occasion she set a new record for flying time. Amelia Earhart made these flights to show that women had a place in aviation and that air travel was useful.
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【单选题】某汽轮发电机型号为QFSN-300-2-20,可以得知它的额定容量为()兆瓦。
A.
2
B.
20
C.
300
D.
200
【多选题】某台汽轮机型号为:CLN600-25/600/600,下列选项正确的是:
A.
CLN600-25/600/600中,C是  超临界的超字汉语拼音的第一个字母;
B.
CLN600-25/600/600中,L是临界的临 字汉语拼音的第一个字母;
C.
CLN600-25/600/600中, 25代表新汽压力,单位MPa
D.
这个型号的汽轮机 CLN600-25/600/600,是600MW亚临界机组
【简答题】汽油机是工农业生产中常用的热机,某型号汽油机的结构如图,若该汽油机的效率是20%,飞轮转速是1200r/min,汽油的热值为4.6×10 7 J/kg,则在汽油机内完全燃烧2kg汽油能放热 J,这些热通过该汽油机转化的能对外做有用功 J;该汽油机每秒钟内完成 个冲程,做功 次。为了降低汽缸体的温度,汽缸外有一个水箱,使汽缸被水包围着,用水来降低汽缸体的温度是因为水的 。
【单选题】化眼影时通常分三层表现眼影技法,这三层依次是
A.
表现色、亮色、暗色
B.
亮色、暗色、表现色
C.
暗色、亮色、表现色
D.
亮色、表现色、暗色
【单选题】关于相律, 下面的陈述中正确的是
A.
相律不适用于有化学反应的多相系统
B.
影响相平衡的只有强度因素
C.
自由度为零意味着系统的状态不变
D.
平衡的各相中, 系统包含的每种物质都不缺少时相律才正确
【多选题】某台汽轮机的型号是:N1000-31/600/610/610,下列说法正确的是:
A.
N1000-31/600/610/610是一台凝汽式汽轮机
B.
N1000-31/600/610/610是一台一次再热超临界汽轮机
C.
N1000-31/600/610/610是一台二次再热超超临界汽轮机;
D.
N1000-31/600/610/610是一台二次再热超超临界汽轮机,其再热压力为31MPa
E.
N1000-31/600/610/610是一台二次再热超超临界汽轮机,其二次再热温度为610℃;
F.
N1000-31/600/610/610是一台二次再热超超临界汽轮机,其新汽温度、二次再热温度均为610℃;
【单选题】对于相律,下面的陈述中正确的是
A.
相律不适用于有化学反应的多相系统
B.
影响相平衡的只有强度因素
C.
自由度为零意味着系统的状态不变
D.
平衡的各相中,系统包含的每种物质都缺少时相律才正确
【单选题】卢世荣顺应贬值大势,印钞()来整治钞法。
A.
减半
B.
加倍
C.
两倍
D.
三倍
【简答题】某汽轮机的冷却油箱,已知体积为18.28m 3 ,悬挂在汽轮机平台下,用四根拉杆悬挂,油的密度ρ为850kg/m 3 ,考虑到油箱受汽轮机振动的影响,用降低材料许用应力来解决。若材料的许用应力[σ]=7.84×10 7 Pa,试问,拉杆所需的截面积为多少?如选用等边角钢,则选用何种型号?
【单选题】对于相律,下面的陈述中正确的是
A.
相律不适用于有化学反应的多相系统
B.
影响相平衡的只有强度因素
C.
自由度为零意味着系统的状态不变
D.
平衡的各相中,系统包含的每种物质都不缺少时相律才正确
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