金属材料传导电流的性能称为______,其衡量指标是______。

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问题:

金属材料传导电流的性能称为______,其衡量指标是______。

考点:电焊工初级电焊工初级
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如图所示,用一根不可伸长的绝缘细线,一端栓一个质量m=0.1kg、带电量q=10-4C的小球,另一端固定在O点.现在最低点A给小球一个沿水平方向的速度,若要使小球能在竖直平面内做匀速圆周运动,还需在竖直方向上加一个匀强电场,求:电场强度的大小和方向?(g=10m/s2

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08-32捣固车深度传感器实质就是将拨叉的运动距离转换成与之成()关系的直流输出电压。

A、线性

B、抛物线

C、曲线

D、无关联

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This was one of my experiences (1) . When I was in my 30s, I was working for a large international company which had its head office in London. I was working in the (2) department.

The company had a training centre which was just outside London. Different courses were held there throughout (3) and I (4) go on one training course a year. These usually started (5) a Sunday evening and lasted six days.

Once I was (6) a week’s training course with about forty (7) sales people. I was in the bar on the Friday evening and suddenly a woman who was (8) behind the bar asked mea curious question. "I hope you don’t (9) my asking," she said, "but I’ve been (10) about it all week. Have you got a sister (11) Mary" The woman’s name was June. And she used to do various jobs at the training centre. She worked in the office, she organized all the food and drink for the centre and she worked in the bar at lunchtime and in the evening.

My answer (12) June’s question was "Yes", and June said, "I thought (13) . I met her last September when she was organizing a course here. " At that time, my sister was working for (14) company but in a different part of the country. That was (15) she came to be at the training centre.

(16) surprised me was how June guessed we were brother and sister. Three things made it even more (17) . First, she had met my sister six months before she met me. Second, they have about sixty new people every week at the training centre. So about one thousand five hundred people had (18) the centre in those six months. And (19) , my sister is married, so she doesn’t have the same family name as me.

We’re not (20) , but I guess we must look quite like each other.

7().

A.other

B.another

C.the other

D.one other

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导游人员要不怕辛苦,设身处地为老年旅游者着想,尽可能多地给予关心和照顾,安排饮食起居、旅游活动时,要充分考虑老年人的______特点和______状况,多听取他们的意见和建议。

题型:填空题

()是将一条曲线在指定点处打断成两条曲线,以便于其它操作。

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