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【简答题】
Jiangsu calls for production safety amid coronavirus outbreak Hello Jiangsu 3 days ago Jiangsu Provincial Department of Emergency Management issued a notice recently to urge all businesses to strengthen production safety amid the coronavirus outbreak. Manufacturers, especially those who produce protective appliances including ethanol, disinfectants, protective clothing and goggles during the Spring Festival holiday, must ensure production safety, the notice said. According to the notice, epidemic prevention is of utmost importance at present. Officials in the emergency management system must take their due responsibility in the fight against the novel coronavirus epidemic, it added. Manufacturers should at the same time ensure production stability as well as production safety, according to the notice. The Provincial Emergency Management Department also urges all levels of the emergency management system to be prepared for natural disasters and risk of infection in handling emergencies. Emergency command centers at all levels shall perform their duty in face of emergency and report the problems in time, said the notice. Please write a composition of over 200 words based on the article above.
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举一反三
【单选题】有些飞机的翼尖部位安装了翼稍小翼,它的功用是
A.
减小摩擦阻力
B.
减小压差阻力
C.
减小诱导阻力
【判断题】乙酸乙酯皂化反应的动力学实验中,可以用物理法来测定乙酸乙酯的浓度变化,通常是用旋光仪来测定溶液的旋光度。
A.
正确
B.
错误
【判断题】乙酸乙酯皂化反应的动力学实验中,可以用物理法来测定乙酸乙酯的浓度变化,通常是用旋光仪来测定溶液的旋光度。
A.
正确
B.
错误
【判断题】在影视制作流程中,Matte Painting与概念设计图虽然都涉及到场景和氛围这两个关键词,但其实两者有很大不同,前者处于制作流程的前期,后者处于制作流程的后期。
A.
正确
B.
错误
【多选题】在影视制作流程中,Matte Painting和概念设计的区别都有哪些?
A.
前者处于流程后期,后者处于流程前期。
B.
前者对画面的完成度要求更高。
C.
后者对画面的完成度要求更高。
D.
后者处于流程后期,前者处于流程前期。
【单选题】有些飞机的翼尖部位安装了翼稍小翼,它的功用是
A.
A.减小摩擦阻力
B.
减小压差阻力
C.
C.减小诱导阻力
【单选题】乙酸乙酯皂化反应的动力学实验中,可以用物理的方法来测定反应物浓度的变化,选用的仪器是
A.
旋光仪
B.
电导率仪
C.
阿贝折光仪
D.
电位差计
【判断题】透射仿射对对应的对应点的连线不一定互相平行。( )
A.
正确
B.
错误
【简答题】请写出J21-80A表示什么?
【单选题】有些飞机的机翼尖部安装翼稍小翼,它的功用是:
A.
减少摩擦阻力
B.
减少压差阻力
C.
减少干扰阻力
D.
减少诱导阻力
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