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【多选题】
柯萨奇病毒的特征包括A.
衣壳呈20面体立体对称，无包膜
B.
主要以呼吸道传播，偶尔由粪-口途径传播
C.
临床表现呈多样化
D.
感染机体可形成病毒血症
E.
和实验进行鉴定
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反馈参考答案：
举一反三
【简答题】人体最大的消化腺是___ __。
【单选题】What is true about knowledge management?
A.
As baby boomers retire at an increasing rate, knowledge management is helping organizations capture their knowledge.
B.
A knowledge management system is not a single technology but a collection of technology-based tools.
C.
Finding the right technology to manage knowledge assets is much easier than identifying what knowledge is needed, why it is needed, and who has this knowledge.
D.
All of the above are true.
【单选题】1676年，哪位科学家用自制的显微镜，第一次观察到微生物，为微生物学的发展奠定了基础。
A.
荷兰人列文虎克
B.
法国微生物学家巴斯德
C.
德国学者郭霍
D.
俄国学者伊凡诺夫斯基
【单选题】1676年,哪位科学家用自制的显微镜,第一次观察到微生物,为微生物学的发展奠定了基础。
A.
荷兰人列文虎克
B.
法国微生物学家巴斯德
C.
德国学者郭霍
D.
俄国学者伊凡诺夫斯基
E.
英国人弗莱明
【单选题】What is the feature of a knowledge economy ?
A.
People have to receive higher education to qualify for a professional position.
B.
Students majoring in liberal arts usually have difficulty securing a job.
C.
New positions are constantly created that require people to keep learning.
D.
Colleges find it hard to teach students how to cope with the changing economy.
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