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问题 单项选择题

20岁男青年被刀刺伤右上腹，有关手术错误的是()

A．可沿原创口扩大后进腹探查

B．中、下腹肠管均应探查

C．可能伤及下腔静脉

D．可能伤及肝、胆道、胃十二指肠、横结肠等

E．胃管内有血不一定合并胃穿孔

答案

参考答案：A

单项选择题

私营业主方某2001年5月23日多向税务局交纳4000元税款，并于2001年7月1日结算缴纳税款，问什么时间之前方某发现多缴税款，还可以向税务机关要求退还多缴的税款并加算银行同期存款利息( )。

A．37034

B．2004年5月23

C．37438

D．38169
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单项选择题 共用题干题

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). A transmission from any station propagates the length of the medium in both directions and can be received by all other  (4). At each end of the bus is a (5) , which absorbs any signal, removing it from the bus.

空白（1）处应选择（）

A.medium

B.connection

C.token

D.resource
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