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问题 单项选择题 A1型题

口服补液盐配方中添加葡萄糖的目的是（）

A.增加热量供应

B.改善口感

C.调整渗透压

D.增加钠的吸收

E.减轻腹泻

答案

参考答案：D

解析：由于钠的吸收有赖于小肠黏膜Na+-葡萄糖共同载体，故口服补液盐配方中添加葡萄糖的目的是增加钠的吸收。

单项选择题

Both bus and tree topologies are characterized by the use of multipoint（）．For the bus，all stations attach，through appropriate hardware（）known as a tap，directly to a linear transmission medium，or bus．Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the（）．A transmission from any station propagates the length of the medium in both directions and can be received by all other（）．At each end of the bus is a（），which absorbs any signal，removing it from the bus．

For the bus，all stations attach，through appropriate hardware（）known as a tap，directly to a linear transmission medium，or bus．

A．processing

B．switching

C．routing

D．interfacing
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单项选择题 A1/A2型题

眼内容物包括，除了（）

A.前房

B.后房

C.晶状体

D.玻璃体

E.视网膜
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