试题与答案

液压系统的压力损失有沿程损失和（）两种。

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题型：填空题

题目：

液压系统的压力损失有沿程损失和（）两种。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：目是每英寸长度上的网孔数。

考点：机加取制样工考试机加取制样工（中级）机加取制样工（中级）题库
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                            School Sports Meeting !
Time8:00 am September 29
PlaceOn the playground
ClothesGirls: white T-shirt, red skirt,white shoes
Boys: white T-shirt,blue pants,white shoes
Needwater, pens, notebooks
Don't needfood, books
1. The school sports meeting begins __________.
A. in the morning
B. in the afternoon
C. after school
D. in the evening
2. Do the girls and the boys need the same clothes?
A. Yes, they do.
B. No, they don't.
C. I don't know.
D. Yes, they don't.
3. Their shoes are __________.
A. red
B. blue
C. white
D. green
4. The students needn't take __________ to school.
A. pens
B. notebooks
C. food
D. water
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