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【简答题】
On a Friday night ,a poor young violinist was playing his violin at the entrance of the subway station .The music was so great that people down to listen and put some money into his hat . The next day ,the violinist came to the entrance again. He put down his hat as usual. Beside the hat ,there was a piece of paper with some on it .It said ,“A George Sang has put an important thing into my hat by .Welcome to claim (认领) it .”Soon the people were all attracted by the words and what it could be .After a while a man rushed through the crowd, took the violinist’s shoulders and said ,“I knew you would come here.” The violinist asked, “Did you something ?“Lottery(彩票).” The violinist took out a lottery ticket with Sang ’ name on it .Sang took it and danced happily. Sang was an office worker. He bought the lottery and a prize of $ 500,000. But when he gave $ 50 to the violinist for his wonderful music , the lottery ticket was thrown in, too. The violinist was a college student . That morning ,he was going to to Vienna for higher education. However, when he found the ticket ,he cancelled the flight and to the entrance. Later someone asked the violinist why he didn’t take the lottery ticket to pay tuition(学费). He said,“Although I don’t have much money ,I live happily .If I lose , I won’t be happy forever. 小题1: A.went B.slowed C.turned D.fell 小题2: A.music B.money C.words D.tickets 小题3: A.chance B.hand C.choice D.mistake 小题4: A.asked B.felt C.wondered D.knew 小题5: A.certainly B.never C.always D.exactly 小题6: A.get B.lose C.want D.buy 小题7: A.held B.kept C.lost D.won 小题8: A.walk B.fly C.ride D.run 小题9: A.returned B.reached C.pointed D.jumped 小题10: A.name B.lottery C.honesty D.money
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A.
出发地机场天气状况不宜起飞
B.
. 空中交通管制
C.
飞行航路上气象状况不宜飞越
D.
目的地机场天气状况不宜降落
【多选题】体绘制与面绘制不同,有很多经典算法,下列哪些项是体绘制中的经典算法( )。
A.
光线投射法
B.
足迹算法
C.
MC算法
D.
错切-变形算法
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A.
切削平面
B.
基面
C.
正交平面
D.
法平面
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A.
正确
B.
错误
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A.
正确
B.
错误
【简答题】切削运动的定义
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【多选题】切削加工时,为了获得各种形状的零件,刀具与工件之间必须具有一定的相对运动,即切削运动,切削运动按作用可分为:
A.
刀架运动
B.
主运动
C.
主轴运动
D.
进给运动
【简答题】切削运动的分类及定义,
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