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问题 单项选择题

与肥大细胞上Fc段受体结合的Ig是（）

A.IgM

B.IgG

C.IgA

D.IgD

E.IgE

答案

参考答案：E

解析：IgE是一类亲细胞抗体，其CH2和CH3结构域可与肥大细胞、嗜碱性粒细胞上的高亲和力FcεRⅠ结合。

单项选择题

Traditional Internet access methods like dial-up were so slow that host computers were connected to the dial-up. (6) at the customer premise over slow (7) ports. PPP was designed to run directly over these serial links. But with the advent of broadband Internet (8) technologies such as ADSL and cable modems there has been a considerable increase in the bandwidth delivered to the end users. This means that the host computers at the customer premise connect to the (9) or cable "modem" over a much faster medium such as Ethernet. It also means that multiple (10) can connect to the Internet through the same connection.

（7）是（）

A.parallel

B.digital

C.serial

D.variable
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单项选择题

因不动产提起诉讼的案件自行政行为作出之日起超过（），其他案件自行政行为作出之日起超过（）提起诉讼的，人民法院不予受理。

A、十五年，十年

B、十年，十五年

C、二十年，五年

D、二十年，十年
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