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问题 单项选择题

为了支持不同的传输介质，快速以太网提供了3种技术标准，即100BASE-T4，100BASE-TX，100BASE-FX。100BASE-TX使用（）。

A、4对、3类线

B、2对、3类线

C、4对、5类线

D、2对、5类线

答案

参考答案：D

选择题

选择与下列句中划线部份相同或相近的选项。

小题1:The Smiths are having dinner at home at the moment.

A．Mr Smith

B．Mrs Smith

C．The Smith family

D．Mr Smith and his son小题2:Lucy does better in drawing than her twin sister.

A．is better for

B．is better at

C．is better to

D．is better in小题3:—What do you often do after supper?

—I often watch TV. but sometimes go out for a walk.

A．sometimes

B．sometime

C．at times

D．some time小题4:All    the children had a good time at Mark's birthday party.

A．help each other

B．enjoy themselves

C．had a wonderful time

D．have a big dinner小题5:Den Yaping could play ping-pong when she was four.

A．at the age of four

B．four years later

C．for four years

D．four years age
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单项选择题

肝细胞肝癌增强CT的典型表现（）

A.动脉期高密度，延时扫描等密度

B.动脉期等密度，延时扫描低密度

C.动脉期低密度，延时扫描高密度

D.动脉期高密度，延时扫描低密度

E.动脉期等密度，延时扫描高密度
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