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问题 多项选择题

运输作业中所涉及的组织称作“当事人”，以下选项中属于运输作业“当事人”的有______。

A．托运人

B．承运人

C．无船承运人

D．国际多式联运经营人

E．收货人

答案

参考答案：A,B,C,D,E

单项选择题

Both bus and tree topologies are characterized by the use of multipoint(1)．For the bus,all stations attach,through appropriate hardware(2) 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(3).Atransmission from any station propagates the length of the medium in both directions and can be received by all other(4).At each end ofthe bus is a(5),which absorbs any signal, removing it from the bus．

空白（2）处应选择（）

A.processing

B.switching

C.routing

D.interfacing
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单项选择题 B型题

片剂的弹性复原以及压力分布不均匀时会造成（）

A.裂片

B.松片

C.粘冲

D.色斑

E.片重差异超限
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