皮皮学，免费搜题
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【单选题】
大批量铸造精密小型黑色金属零件时,宜采用( )。
A.
砂型铸造
B.
铸造
C.
离心铸造
D.
熔模铸造
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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B.
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【简答题】词组翻译(根据下列句子的意思写出对应的英文单词) The spectrum obtained when radiation (light, ultraviolet radiation, etc.) from a source giving a continuous spectrum is passed through a substance.
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【判断题】抗原决定簇是抗原中决定抗原特异性的特殊化学基团,抗原通过其与相应淋巴细胞表面的抗原受体结合,激活淋巴细胞,引起免疫应答。包括功能性决定簇和称隐蔽决定簇。
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B.
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【简答题】Dear Sir or Madam, I saw the wanted ads in China Daily on September 5th, 2014, and I know that you need a tour guide in Beijing. I’d like to apply for that position. My name is Wang Yan. I was born in...
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【简答题】词组翻译(根据下列句子的意思写出对应的英文单词) The small proteins have five families or classes:H1,H2A,H2B,H3,H4;and have a large positive charge (rich in Lys 、 Arg ) which can bind very strongly to the negtively charged D...
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【单选题】A: Excuse me. I heard from the annoucement that Flight CA3320 has been ___________. What happened? B: Yes Sir. We are very sorry to inform you that. It is because of the bad weather condition in Banko...
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【单选题】听力原文：W: Now, sir, can you tell me exactly what happened? M: Yes. I was right here watching three children playing ball in front of the school. It's a dangerous place for children to be playing. I wond...
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查看完整题目与答案
【简答题】词组翻译(根据下列句子的意思写出对应的英文单词) A specialized organelle that holds a mixture of hydrolytic enzymes. .
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A.
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B.
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【简答题】Dear Sir or Madam, I saw the wanted ads in China Daily on September 5th, 2014, and I know that you need a tour guide in Beijing. I’d like to apply for that position. My name is Wang Yan. I was born in...
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