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One summer evening, a 10-year-old boy was trying to hit a bottle with a slingshot(弹弓). The bottle was about 7 to 8 meters __ 36 __. The boy tried many times but still couldn’t hit it. His mother just kept passing him small stones. A girl walked by. She __ 37 __ the boy for some time and said to the mother, “Let me show him how to shoot.” “No, thank you,” said the __ 38 __, “he is blind.” The girl was surprised and asked, “How can he hit the bottle then?” “I tell him he can do it,” said the mother, “__ 39 __ he tries hard enough.” The little boy tried again and again. The mother always told him that he was doing __ 40 __. The boy became more confident. After a long time, it __ 41 __ dark. The girl said goodbye to the mother and son. When she turned to leave, she heard a stone hit the __ 42 _! The little boy finally made it! With confidence and patience, nothing is impossible. 小题1:A. long            B. tall            C. away 小题2:A. said            B. watched         C. wondered 小题3:A. mother          B. boy             C. girl 小题4:A. before          B. after             C. if 小题5:A. good           B. better            C. well 小题6:A. went           B. become           C. got 小题7:A. bottle           B. slingshot          C. stone
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【单选题】已知某挖土机挖土的一个工作循环需2min,每循环一次挖土0.5m3,工作班的延续时间为8小时,时间利用系数K=0.85,则其产量定额为( )m3/台班。
A.
12.8
B.
15
C.
102
D.
120
【单选题】活塞一般采用的材料是
A.
铸铁
B.
铝合金
C.
合金钢
D.
低碳钢
【单选题】轿车上活塞采用的主要材料是()
A.
铝合金
B.
钛合金
C.
轴承合金
D.
镁合金
【单选题】活塞采用的是( )材料。
A.
铸造铝合金
B.
铜合金
C.
铅合金
D.
不锈钢
【多选题】下列属于随动控制系统的是:
A.
雷达跟踪控制系统
B.
雕刻机床控制系统
C.
火炮攻击角度控制系统
D.
恒定炉温控制系统
【多选题】下列属于随动控制系统的是:
A.
冰箱温度控制系统
B.
火炮发射控制系统
C.
数控机床控制系统
D.
自动跟踪雷达控制系统
【单选题】活塞采用的是( )材料
A.
铝合金
B.
铜合金
C.
铅合金
D.
不锈钢
【单选题】挤压腓肠肌可见拇趾背伸,余四趾呈扇形展开,此阳性反应为
A.
巴彬斯基征
B.
凯尔尼格征
C.
戈登征
D.
奥本海姆征
E.
查多克征
【单选题】脊神经前、后根合成部位是在
A.
横突孔处
B.
椎孔内
C.
椎间孔处
D.
椎管内
E.
骶管裂孔处
【单选题】脊神经前、后根合成部位是在:
A.
椎管内
B.
椎孔内
C.
横突孔内
D.
椎间孔内
E.
骶管裂孔内
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