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【单选题】
最早发现的白细胞致热原主要是指
A.
白细胞介素-1（IL-1）
B.
白细胞介素-2（IL-2）
C.
肿瘤坏死因子（TNF）
D.
干扰素（IFN）
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【简答题】Textbook Page 56 Activity 4 Role-play: Speaking Student A You are the assistant manager of a software export company in Shenzhen. Now you are discussing with Mr. Gray, a businessman from U.S.A. who’s ...
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【判断题】凸轮机构是一种低副机构
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【多选题】电子商务的发展主要经历了哪几个阶段?
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基于电子数据交换的电子商务
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基于互联网的电子商务
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基于3G、4G、5G的移动电子商务
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【判断题】The active voice is usually used when the equipment has performed an action.
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错误
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【简答题】Page 1 in textbook 5-5 Describe how online purchasing has changed the business-to-business marketing process and discuss the advantages and disadvantages of electronic purchasing.
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【简答题】Complete the following sentences by filling in each blank with an appropriate verb from the box below. Change its form if necessary. Some of the verbs may be used more than once. vary, differ, illus...
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【判断题】The meaning of a sentence remains the same when it is changed from the active voice to the passive voice.
A.
正确
B.
错误
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【判断题】The active voice is generally preferred in business writing.
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正确
B.
错误
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【单选题】股动脉穿刺后局部按压时间
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B.
5min
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E.
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【判断题】凸轮机构是一种低副机构。
A.
正确
B.
错误
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相关题目：
【简答题】Textbook Page 56 Activity 4 Role-play: Speaking Student A You are the assistant manager of a software export company in Shenzhen. Now you are discussing with Mr. Gray, a businessman from U.S.A. who’s ...
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【多选题】电子商务的发展主要经历了哪几个阶段?
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【判断题】The meaning of a sentence remains the same when it is changed from the active voice to the passive voice.
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【判断题】凸轮机构是一种低副机构。
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