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【简答题】
完形填空 Manners(礼貌)are important to happy relations(关系)among people. No one 1 a person with bad manners. A 2 with good manners never laughs at people when they are in trouble. Instead, he 3 to help them. When he asks for something, he says ' 4 . 'And when he receives something, he 5 says 'Thank you'. He does not interrupt(打扰) 6 people when they are talking. He does not talk loudly or laugh loudly 7 public. When he sneezes or spits(吐痰), he uses a 8 . If he is late, he 9 make an apology(道歉)to the teacher either at the time 10 after class. (     )1. A. thinks (     )2. A. boy (     )3. A. tries (     )4. A. Give me (     )5. A. never (     )6. A. every (     )7. A. on (     )8. A. book (     )9. A. can (     )10.A. or B. likes B. man B. wants B. Please B. sometime B. some B. at B. cup B. will B. nor C. hates C. person C. has C. Yes C. usually C. his C. of C. handkerchief C. could C. and D. loves D. give D. enjoys D. Hello D. still D. other D. in D. hand D. may D. but
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A.
螺栓断裂
B.
齿轮的齿面发生疲劳点蚀
C.
蜗杆轴产生过大的弯曲变形
D.
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A.
快 8 倍
B.
快 4 倍
C.
快 16 倍
D.
快 32 倍
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A.
螺栓断裂
B.
齿轮的齿面发生疲劳点蚀
C.
蜗杆轴产生过大的弯曲变形
D.
滚动轴承套圈的滚道上被压出的深的凹坑
【单选题】如果温度每升高10°C,反应速率增大一倍,则65°C的反应速率要比25°C时的快
A.
8倍
B.
16倍
C.
32倍
D.
4倍
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A.
螺栓断裂
B.
齿轮的齿面发生疲劳点蚀
C.
蜗杆轴产生过大的弯曲变形
D.
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D.
变形
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【单选题】The teacher told the students _____ in the Mid-term exam. [     ]
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not cheat
B.
not to cheat
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cheated
D.
should cheat
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A.
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B.
错误
【单选题】如果温度每升高10°C,反应速率增大一倍,则65°C的反应速率要比25°C时的( )。
A.
快8倍
B.
快16倍
C.
快32倍
D.
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