计算题:原始标距为75mm的矩形试样,拉断后,标距为95.64mm,问试样断后伸长率

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问题:

计算题:原始标距为75mm的矩形试样,拉断后,标距为95.64mm,问试样断后伸长率为多少?

考点:机加取制样工考试机加取制样工(初级)机加取制样工(初级)题库
题型:问答题 简答题

对工艺质量改进的建议,属于()汇报材料要点。

A.施工验收阶段编制的质量情况汇报材料

B.达标投产汇报材料

C.创优汇报材料

D.质量专检

题型:问答题 简答题

阅读理解。

     There is a lake near a forest in Sweden. The water in the lake is very clear and everything is quiet and

still. On the far side of the water is some farmland and further away, across the field, is an old church built

on a hill. It has just stopped raining. The brook (小溪) flowing into the lake is full and there is still some

half-melted (半融化的)snow from last winter on the ground.

     The reason why the water is so clear, and everything is so quiet and still, is that most of the plant and

animal life in and around the lake is dead. There are no birds because all the fish and insects, which the

birds need for food, have disappeared. Many trees in the forest are losing their leaves and bark (树皮), and

are sick and dying. Others were blown down by the high winds of last winter, A farmer is working in a field

planting something, but unless he plants a stronger kind of seed this year. the crop will be between 25 to 40

percent lower than a few years ago. The stones of the old church tower are turning to powder and unless

the tower is repaired soon, it will fall down.

     All the death and destruction in this place is caused by the smoke coming out of factories and poisonous

gases from cars and trucks. And yet this silent lake is hundreds of kilometers away from the nearest factory

and highway.

1. What time of the year do you think it is?

A. Spring

B. Summer

C. Autumn

D. Winter

2. Why are there no animals or birds in or around the lake?

A. the weather is terribly cold

B. the area is polluted

C. the lake is quiet

D. they have all been killed

3. Why does the farmer have to plant a stronger kind of seed? Because______.

A. the soil becomes less and less

B. few plants can grow because of the pollution

C. the water in the lake can't be used to irrigate the field

D. the wind is too strong

4. What do you think is the best title of the passage?

A. A Beautiful Place of Interest

B. A Polluted Place

C. A Quiet Place in Sweden

D. A Faraway Mountain Area

题型:问答题 简答题

卫生器具安装工程主控项目中,排水栓和地漏的安装工程应按抽查(),但至少()。

题型:问答题 简答题

有效的咨询目标的特点有()。

A.积极的

B.属于心理学范畴

C.双方接受的

D.可行的

题型:问答题 简答题

小断面向大断面转换工法

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