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【简答题】
Write a job-application letter after reading the following "Job Advertisement on Marketing Assistants". Job Advertisement on Marketing Assistants Marketing Assistant HaiSports is a new joint venture company, founded by the Shanghai-based sports firm Shanghai Sports & Leisure Company and the well-known British sports company Westminster Sports.HaiSports aims to sell high-quality sports equipment to both the Chinese and international markets. There is an exciting opportunity for three new marketing assistants to join the HaiSports team.You will be responsible for helping to turn HaiSports into one of the most reputable brands in the sports equipment marketplace.You will have an active role in putting together and implementing our international marketing strategy. You will have: A university degree in a marketing-related discipline or at least two years of work experience in a marketing role. Starting salary: 6 000 RMB per month Benefits: As a HaiSports employee you will be entitled to a 40 percent discount on all HaiSports products; plus other benefits. Please send your CV and a covering letter to: Grace Zhou HaiSports Penglai Lu Shanghai 200805
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举一反三
【单选题】在滚动轴承的基本分类中,向心轴承其公称接触角α的范围为(    )。
A.
0°<α≤45°    
B.
0°≤α≤45°
C.
45°<α≤90°    
D.
α=0°
【单选题】向心轴承主要承受径向载荷,其公称接触角为( )。
A.
0°~45°
B.
30°~60°
C.
45°~90°
D.
60°~90°
【简答题】当滑动轴承磨损到接触角为____时,即使提高转速,液体摩擦仍然不能建立,这时磨损加剧,轴承不能正常工作。
【判断题】公称接触角为45°≤α≤90°的称为推力轴承。
A.
正确
B.
错误
【单选题】滚动轴承按承受载荷的方向或公称接触角的不同分为向心轴承和推力轴承,其公称接触角为0°~45°的是( )。
A.
径向接触向心轴承
B.
角向接触向心轴承
C.
轴向接触推力轴承
D.
角向接触推力轴承
【简答题】乙醛气相在常压下分解,在 518oC 下进行 CH 3 CHO=CH 4 +CO ,反应是在一平推流反应器中进行的,原料气的空间速度为8h ,要求转化率为 35% ,反应速度常数为 0.33L /(mol.s) ,反应速度对乙醛为 2 级反应。求空间时间 τ 和平均停留时间。
【简答题】打印100以内个位数为6且能被3整除的所有数。
【判断题】径向接触轴承为公称接触角大于0°~45°的向心轴承。
A.
正确
B.
错误
【简答题】打印100以内个位数为3且能被3整除的所有数 #include void main() { int i,j; for(i=0;( );i++) { j=j*10-3; if( ) continue; printf("%d",j); } }
【单选题】向心角接触轴承按滚动轴承的公称接触角α范围为______。
A.
0°    
B.
45°
C.
90°    
D.
0°<α≤45°
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