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依据GB/T18833-2012，反光膜人工加速耐候性试验使用的光源（　　）。

A.紫外灯
B.碳弧灯
C.氙弧灯
D.红外灯
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大学毕业生小王在某建筑工程公司设备部工作，负责施工机械管理。由于刚刚参加工作，他对一些建筑机械的业务内容不熟悉，需要给予指导。根据以上背景，请回答下列问题：
建筑机械统计报表共有（ ）种类。
A.3
B.4
C.5
D.6
单项选择题
It′s that time of the yea—graduation.The end of school year is nearly in sight,and it′s an especially big deal if?you′re finishing high school or college.
One amazing（令人惊叹的）16-year-old Florida girl,Grace Bush,graduated from both high school and college this week!She actually got her college diploma（毕业证书）before her high school diploma.How′d she do that?
"Hard work and dedication（专心致志）,"she told a local TV news station,"have made me succeed in doing high school and college at the same time."She started taking college courses when she was just 13.She would often?get up at 5:30 a.m.and not finish until after 11 p.m.
Doing both at once is a huge achievement,but it has also helped her family save money.She′s one of the 9?children,all home-schooled until the age of 13.Her father is a math professor while her mother is a part-time history?teacher in a high school.Grace Bush has earned her college degree in law,with a near perfect GPA of 3.8 and she?hopes to become a lawyer one day,although her parents expect her to teach at university.By the way,she also plays?basketball in her college team in her spare time.
What do Grace′s parents want her to be in future?
A.Anewsreporter
B.Abasketballplayer
C.Auniversityteacher
D.Alawyer
单项选择题
发动机无大循环，一定是节温器坏了。
A、正确
B、错误
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