生物风化

题型:名词解释

问题:

生物风化

考点:土壤学土壤学题库
题型:名词解释

下列关于哲学、世界观、具体科学之间联系的正确说法是( )

A.哲学是世界观和具体科学的统一

B.哲学是科学的世界观,是对具体科学的科学概括和总结

C.哲学是系统化理论化的世界观,是对具体科学的概括和总结

D.哲学决定世界观,世界观决定具体科学

题型:名词解释
直接写出得数.
36+42=46-15=44+27=1000-600=65+26=
74-36=60+34=80-24=700+200=940-600=
题型:名词解释

作为企业客户服务一部分的物流服务,最终要通过()体现出来。

A.顾客的满意度

B.企业的收益

C.运作绩效

D.企业信誉度

题型:名词解释

One day, when I went shopping with Julie, we came across something special. Waiting in a long checkout line, I thought about going to another, which had the shortest queue. There was only one guy in it, but he was in a wheelchair. Well, we stepped in behind him. At first, he seemed to be having difficulty getting his groceries onto the checking desk. But after a while, I realized that what he was actually doing was separating them into two piles.

However, doing that job was no easy task in itself. I offered to help, but he and the checkout lady had it under control. He asked my wife if she would mind putting his empty basket away. What must it be like, I wondered, to be so dependent on other people like that? The checkout operator came around and gave him his change and the items he needed to have to hand. She hung one bag of groceries over a handle at the back of his chair. I offered to get the other, bigger, bag and he said, “No. But you could do me a favour. Take that lot along to the entrance and give it to Angela.”

As I was told, I did that, leaving Julie with our shopping. Angela, as turned out, was collecting food for people who might otherwise go hungry! I hadn't even noticed her before. This guy, despite the limitations that his physical condition imposed on him, had bought more than twice as much shopping as he needed – and given the bigger bag away to help other people! He didn't let the fact that he needed help stop him from being a help. He may have been limited physically, but his heart was more than capable of overcoming all that. And it changed my idea of dependence when I realized that the help he had given was more than the help he had received.

So … what’s holding the rest of us back?

小题1: From the first paragraph, we know that______.

A.the writer was obviously a disabled person

B.the man in a wheelchair was a shopper

C.the writer and Julie jumped the queue

D.only three people were shopping then小题2: The man put the things he bought into two piles, probably because______.

A.his shopping bags were too small to hold all the groceries

B.he hoped to keep the balance of his wheelchair

C.he intended to help the people in need

D.it would be easy for him to carry小题3: From the passage, we can learn that Angela was probably______.

A.the disabled person’s wife

B.the girl at the checking desk

C.a hungry and homeless beggar

D.a kind-hearted and helpful woman小题4: Which of the following can best describe the man in the wheelchair?

A.kind, energetic and determined

B.positive, dependent and easy-going

C.active, optimistic and open-minded

D.helpful, generous and strong-hearted

题型:名词解释

如图所示,相距为L的两条足够长的光滑平行金属导轨与水平面的夹角为θ,上端接有定值电阻R,匀强磁场垂直于导轨平面,磁感应强度为B.将质量为m的导体棒由静止释放,当速度达到v时开始匀速运动,此时对导体棒施加一平行于导轨向下的拉力,并保持拉力的功率恒为P,导体棒最终以2v的速度匀速运动.导体棒始终与导轨垂直且接触良好,不计导轨和导体棒的电阻,重力加速度为g.下列选项正确的是(  )

A.P=2mgvsinθ

B.P=3mgvsinθ

C.当导体棒速度达到

v
2
时加速度大小为
g
2
sinθ

D.在速度达到2v以后匀速运动的过程中,R上产生的焦耳热等于拉力所做的功

更多题库