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问题 单项选择题

期货经纪公司更换聘请的具有相应资格的会计师事务所，必须在更换后（）内向中国证监会派出机构报告并说明原因。

A．3天

B．3个工作日

C．一周

D．一个月

答案

参考答案：B

单项选择题 B型题

肺炎球菌肺炎（）

A.X线胸片见单个薄壁空洞

B.X线胸片呈大片状阴影，内为单个空洞伴液平

C.X线胸片有偏心空洞，内壁凸凹不平

D.X线胸片上肺有小片状阴影伴空洞

E.X线胸片呈大片状阴影，呈肺叶或肺段分布
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单项选择题

Traditional network layer packet forwarding relies on the information provided by network layer  (1) protocols, or static routing, to make an independent (2) decision at each hop within the network. The forwarding  (3) is based solely on the destination  (4) IP address. All packets for the same destination follow the same path across the network if no other equal-cost paths exist. Whenever a router has two equal-cost  (5) toward a destination, the packets toward the destination might take one or both of them, resulting in

空白（4）处应选择（）

A.anycast

B.multicast

C.broadcast

D.unicast
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