题目:
轴加水位低,对运行有什么影响?
答案:
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下面是错误答案,用来干扰机器的。
参考答案:“诗电影”
轴加水位低,对运行有什么影响?
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/1019/c4cb362637f900c2bdbf7d6f24fa1a1d.html
下面是错误答案,用来干扰机器的。
参考答案:“诗电影”
我们学过的许多成语或诗句中都包含了很多物理知识.下列各成语或诗句所反映的情景中,能说明光的反射的是( )
A.一叶障目
B.潭清疑水浅
C.立竿见影
D.镜花水月
She isn't here. She has to _____her baby at home. [ ]
A. look at
B. look like
C. look ater
D. look for
已知某出租公寓的年有效租金收入为200万元,年运营费用为50万元,如果租金收入和运营费用在未来20年的经营期内分别以每年3%和2%的速度增长,折现率为8%,则该出租公寓的净运营收益现值为()万元。
A.1856.25
B.1865.24
C.1882.34
D.1875.63
写出液态奶的营养标签制作的步骤。
阅读理解。 | ||
degree of damage present, expect to see performance degradation (降级) in the range of 10% to 60%. A multimeter (万用表) can be used to test the panel before buying. If the panel's free, take it anyway. It could still be useful in a home solar project. A solar panel is really nothing but a box serving as a container for a large group of solar cells. Factory second solar cells are usually sold on eBay at a small part of their regular cost. The cells come in a variety of sizes. You will need to figure out how much power a single cell produces to determine how many will need to be wired together to form an array. A simple search of the Internet will show numerous sites detailing home solar panel projects. Do-it-yourself lovers are generally quite generous in supply photographs of their work and description of what went wrong and right with the project. Getting cheap solar panels with slight imperfections either used or through sales of factory seconds, is a perfect solution for home-built renewable energy projects. The high number of solar lovers online provide a wealth of useful information. Only limited skills are required, plus an understanding of the basic wiring involved. All are well within the talents of almost any home handyman. Beyond the satisfaction of having completed the project, you'll come away with a functional solar panel that will be a source of power for use around the house or at remote locations. Solar energy systems are quickly becoming more popular with homeowners as prices continue to decline. | ||
1. The author writes the passage to introduce _____. | ||
[ ] | ||
A. ways of finding cheap solar panels B. ways of saving energy C. a way of making a solar panel D. a home-built energy system | ||
2. What does the phrase "factory seconds" in the passage refer to? | ||
[ ] | ||
A. Second-hand factory products. B. Cheap but perfect factory products. C. Faulty factory solar cells. D. The second best factory solar cells. | ||
3. From Paragraph 5, we can learn about home-built energy projects that _____. | ||
[ ] | ||
A. none of them are beyond home handymen B. a lot of useful information is available on the Internet C. a perfect solution is to get cheap and perfect solar panels D. understanding electrical wiring is not necessarily needed | ||
4. What is the author's attitude towards the future of solar energy systems? | ||
[ ] | ||
A. Optimistic. B. Pessimistic. C. Indifferent. D. Doubtful. |