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【简答题】
阅读理解。 Some children are flying kites near the river. They are very high and Peter can see them in the classroom. His mother's friend Mrs White comes to see his mother this morning and brings a kite to him. She gives it to him after lunch. It looks like a bird. He wants to fly it but his mother doesn't let him do so. 'It's time to go to school,' says the woman,'or you will be late for class. You can play it after school.' The boy is sorry, but he says goodbye to Mrs White and goes to school. Now he's in the classroom but he's looking out. He doesn't listen to Miss Black. She writes something on the blackboard and then turns to the class. 'Name nine things with milk in them, Peter,' she says. The boy doesn't hear her and still sits there. A boy after him taps his back and he understands it. He stands up and Miss Black asks him the question again. He thinks for some time and then says, 'Yes, madam, tea, coffee, cake and… er… six cows.' 1. Where is Peter when some children are flying kites? A. Near the river. B. In the classroom. C. At home. D. At Mrs White's home. 2. Mrs White comes to see Peter's mother _________. A. this morning B. this evening C. after lunch D. this afternoon 3. Mother lets Peter fly the kite after school and _________. A. tells him to go to school B. tells him to do the homework C. they begin to have lunch first D. tells him to listen to the teacher 4. Peter looks out of the classroom, so _________. A. he wants to go home B. he can answer the question C. he doesn't hear Miss Black D. he can fly a kite 5. Peter only knows _________. A. six cows B. three things with milk in it C. how to fly a kite D. tea and coffee
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【单选题】(6~8题共用题干)患儿,出生时皮肤苍白,心率40次/分,无呼吸,四肢略屈曲,弹足底无反应。患儿Apgar评分为
A.
0分
B.
1分
C.
2分
D.
3分
E.
4分
【单选题】普通三角形螺纹的牙型角α等于()度。
A.
3
B.
30
C.
55
D.
60
【简答题】运输成本不包括( )。 A. 驾驶员工资 B. 车辆保险费 C. 汽油费 D. 货物保险
【单选题】普通螺纹(三角形螺纹)的牙型角α= 。
A.
0 °
B.
55°
C.
60°
D.
33°
【判断题】三角形螺纹的牙型角 α = ___60 °________,适用于____联接_______。而梯形螺纹的牙型角 α = ___30 °________,适用于___传动_________。
A.
正确
B.
错误
【单选题】三角形螺纹的牙型角α=()
A.
30°
B.
60°
C.
【单选题】三角形螺纹的牙型角 α = (    )度,适用于(    )。
A.
60、连接
B.
30、连接
C.
60、传动
【单选题】运输成本不包括( )。
A.
仓储费
B.
保险费
C.
装卸费
D.
第三国产品认证费
【单选题】三角形螺纹的牙型角α=_______,而梯形螺纹的牙型角α=_______
A.
60°; 30°
B.
60°; 60°
C.
30°; 60°
D.
30°; 30°
【简答题】三角形螺纹的牙型角α为60度,摩擦系数f=1.0时,该螺纹副的当量摩擦系数ρv= (精确到小数后两位)。
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