寄生虫完成一代的发育有无性世代和有性世代两种生殖方式，这种现象叫：（）.
A. 幼体增殖
B. 世代交替
C. 无性或有性生殖
D. 孢子生殖
E. 配子生殖
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教师掌握所教学科知识的框架和基本知识点是属于教师的哪一种学科内容（）。
当触电者脱离电源后，应根据触电者的具体情况，迅速对症救护。现场应用的主要救护方法是（）和（）法。
Which important factor is taken into account when determining an estimate for the maximum network bandwidth to be used by a customer？（）
A. the size of the hard drives for each PC connected to the client’s network
B. the average size of the wallet based on the number of profiles and accounts
C. if any users will use IBM Tivoli Access Manager for Enterprise Single Sign-On during non-work hours
D. the number of users that will be connected using the wireless network， as opposed to a wired connectio
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