题干

在铁制品上镀上一定厚度的锌层,以下电镀方案中正确的是(    )

A:锌作阳极,铁制品作阴极,溶液中含Fe2+

B:锌作阴极,铁制品作阳极,溶液中含Zn2+

C:锌作阴极,铁制品作阳极,溶液中含Fe3+

D:锌作阳极,铁制品作阴极,溶液中含Zn2+

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答案(点此获取答案解析)

D

同类题1

请阅读下面短文,理解其大意,然后从每小题所给出的A、B、C三个选项中,选出一个能填入空白处的最佳选项。

    Maxime and Lise are a young French couple. They are ready to travel across China from Beijing to Yunnan Province on a tandem bicycle (双人自行车). They have two main purposes and one of them is that they want to encourage green 1 through it.

    Maxime, 26, works helping farmers raise their cows, 2his wife Lise, 26, is a teacher. The two also like sharing their travel stores on Facebook.

    We chose a tandem bicycle because it makes it 3 to communicate with each other about interesting people and things we come across during the journey. 4, bicycling is healthier. And it's a cheaper and more environment-friendly way of traveling than 5 cars, motors and so on, “the couple said.

    As for the other 6of their journey, the two said they wanted to get people's good ideas on topics such as health, econnmy (经济) and politics. When they were asked 7they chose to visit China, they said it was because they often talked about its long history and beauty and how much of the country is competitive (有竞争力的) in the world.

    We know China is a country with a large population and will be the 8 of the economy around the world in the future. We want to get a better understanding of the country and its people. We 9the country,” they said.

    The couple will be on the journey to China soon. We hope they can make more people further 10 China by shairing what they see and hear on the way. Meanwhile. We hope they enjoy their travel in China.

同类题2

阅读理解

    When we think of leadership, we often think of strength and power. But what are these really, and how do they operate?

    Leadership today is not about forcing others to do things. If this is even possible, it is short-term. If you order someone to do something against their will, they may do it because they feel they must, but the anger they feel will do more harm in the long-term. They will also experience fear.

    Fear causes the thinking brain to shut down, making the person unable to function at his or her best. If they connect you with this emotion of fear, they will become less functional around you, and you will have succeeded in not only shooting yourself in the foot, but possibly making a very good employee or partner unable to perform effectively. Fear has no place in leadership.

    The way we affect people in a lasting way is by our own character, and our understanding and use of emotion. We can order someone to do something, which may be part of the work day, or we can employ them at the emotional level, so they become fully devoted to the projects and provide some of their own motivation (积极性). Today's work place is all about relationships.

    Anyone works harder in a positive environment in which they're recognized and valued as a human being as well as a worker. Everyone produces just a bit more for someone they like Leaders understand the way things work. They know money is not the only most motivating factor in the work life of most people.

    The true strength of leadership is an inner strength that comes from the confidence of Emotional Intelligence—knowing your own emotions, and how to deal with them and those of others. Developing your emotional intelligence is the best thing you can do if you want to develop your relationships with people around you, which is the key to the leadership skills.