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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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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 did the parents do to help Grace with her education?
A.Theysharedwithhercollegehistorylessons
B.Theytaughtheruntilshewas13
C.Theymadeherinterestedinmath
D.Theyhiredapart-timeteacher
多项选择题
安全运营风险评估工作包括（） A.
定期或不定期对运营情况进行危险源识别和安全评估 B.
潜在的风险进行专题研究 C.
人员安全风险培训 D.
建立安全运营评估体系
单项选择题
参与制定建筑机械管理制度体现的机械员工作职责是（ ）。
A.机械管理计划
B.建筑机械前期准备
C.建筑机械安全使用
D.建筑机械成本核算
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