如何用电磁式万用表判断二极管的好坏?

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问题:

如何用电磁式万用表判断二极管的好坏?

考点:水轮发电机组值班员考试初级水轮发电机值班员初级水轮发电机值班员题库
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免疫系统,是人体和动物健康“防线”,用以抵御细菌和其他微生物。随着免疫系统疾病的增加,科学家加强了对此项目的研究。2011年诺贝尔奖评审委员会认定,美法3名科学家“发现免疫系统激活的关键原理,革命性地改变我们大家对免疫系统的理解”。免疫系统研究获得新成果说明

A.实践的需要是推进免疫系统认识的根本动力

B.认识的发展根源于社会或专业部门的奖励机制

C.科学家的兴趣是推进免疫系统认识发展的直接动力

D.严密的逻辑和长期的研究一定能确保科研成果的如期成功

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申请舱口检视、载损鉴定和监视卸载的,应提供( )等单证。

A.舱单

B.积载图

C.航海日志及海事声明

D.提单

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无效的合同自始至终都没有法律效力,合同部分无效则整个合同全部无效。()

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阅读下面的短文,并根据短文后的要求答题。(请注意问题后的字数要求)

[1] Learning to save money when you’re young is an important lesson. All good lessons and habits begin early, and saving is a skill that everyone needs. Many people---adults included-- do not have a good sense of saving for the long run.

[2] Make sure you save and don’t spend too much, which is a good way to build up wealth. I have put my earnings in a bank. Many teens I know spend all the money they earn so it never has a chance to grow. Young people should realize that their teenage years are a great time to begin saving.

[3] At high school many parents pay for almost everything, so your expenses can be small. If you have a lot , you should have fun with some of the money. But you should also save some so that it will grow. Then you can begin planning for your future.

[4] After high school, college is expensive and then “real” life begins, with expenses such as food and rent. You can hold on to a good percentage of the money you earn as a teen. The earlier      , the more time the money has to grow. If you are in your thirties without any savings, you will always have to struggle. The earlier you begin saving, the easier it is to create a nest egg.

[5]Later in life it can be hard to start saving because general costs of living are more expensive and you may only have enough to pay your bills. If you want to buy a house and have a family, you need money to start with, which comes from saving.

[6]Saving early will mean you will have to work for fewer years when you are older. It will also allow you to spend time doing the things that you want to do. In addition, it will mean you can live the way you want to without worrying.

小题1:What might be the purpose of the writer? (no more than10 words)

                                                                        

小题2:Please fill in the blank in Paragraph 4 with proper words or phrases to complete the sentence. (no more than 5 words)

                                                                        

小题3:What is the main idea of Paragraph 3?(no more than 12 words)

                                                                        

小题4:List three benefits of saving early according to the text.( no more than 30 words)

                                                                        

                                                                        

                                                                        

小题5:According to the passage, what do you think of saving?(no more than 20 words)

                                                                        

                                                                        

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关汉卿的代表作是《窦娥冤》。( )

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