肺结核痊愈阶段的X线表现A．边缘清楚、密度高的结节状阴影 B．雾状、边缘模糊不清的阴

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．

Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the（）．

A．tree

B．bus

C．star

D．ring

How many books do you have?  [ ]

A. May I have a look?

B. 20.

C. No.

Father ’s Day is coming. I plan to buy ______ nice bag for my father.

A．a

B．an

C．the

D．不填

突出素质教育，意味着对教师要求师德必须是（）。

A.尊师爱生

B.师德意识要求高水准

C.师德行为要成为楷模

D.管理到位

企业员工所获得的劳动报酬要与劳动力市场价格水平相当。这属于公平中的（）

Ａ.外部公平

Ｂ.内部公平

Ｃ.个人公平

Ｄ.相对公平