两种,每种考试时间为90分钟,满分100分。
The unified exam for the national situation and policy consists of two parts, each part lasting 90 minutes with a total score of 100 points....
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纳米材料的应用非常广泛,从医学到电子、从能源到环境保护,几乎可以应用于各个领域。其中一些重要的应用有1. 医学: 纳米材料可以用于药物传递、治疗性影像、生物传感器、抗肿瘤药物开发等。 2. 电子: 纳米材料可以用于制造体积小巧、功耗低的微型传感器或者集成电路。它还能够有效地阻止EMI/RFI干扰,因此常常在无线通信中使用。 3. 能源: 纳米材料可以作为储能材料,例如锂-氧化物储能技术中使用的三元正极材料。它还可以作为光伏太阳能装置中的效益材料,例如光吸收剂或者光释放剂。 4. 环境保护: 纳米材料也发挥重要作用于净水处理、净化大气中的有害气体或者去除衣物上的异味, 并且还有助于减少工业...<未完>点击进入
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森林 Living Room: A comfortable living room with a cozy couch, a large window letting in plenty of natural light, and a few plants to add some greenery. Sunroom: A sunroom with lots of windows to let in the sunlight and plenty of plants to make it feel like you’re surrounded by nature. Treehouse: A...<未完>点击进入
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My Summer Vacation This summer vacation, I had a wonderful time. My parents took me to the beach and I enjoyed playing in the sand and swimming in the sea. We also visited some interesting places such as the museum, zoo, and amusement park. The most exciting part was when we went camping in the mou...<未完>点击进入