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煤浆滚筒筛的作用是什么？煤浆不经筛分直接进入槽内会有什么危害？

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货币政策是政府为实现一定的宏观经济目标而制定的关于货币供应和流通的一系列举措。主要的货币政策工具有：（）

A. 利率
B. 法定存款准备率
C. 再贴现政策
D. 海外市场业务
E. 公开市场业务

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患者，女性，70岁。护士巡视时发现其突然意识丧失伴抽搐，呼吸断续，瞳孔散大。在对其进行心肺复苏时，胸外按压与人工呼吸的比例应为（）.

A. 15：1
B. 15：2
C. 30：1
D. 30：2
E. 30：4

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床沙形体

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A verification plan shows a network diagram with branch office Routers B1 through B100, plus two ABRs, ABR1, and ABR2, all in area 100. The branches connect to the ABRs using Frame Relay point - to - point subinterfaces. The verification plan lists the output of the show i p ospf database summary 10.100.0.0 command on a router B1, one of the branches. Which of the following is true regarding the output that could be listed for this command?（）

A. The output lists nothing unless 10.100.0.0 has been configured as a summary rou te using the area range command.
B. If 10.100.0.0 is a subnet in area 0, the output lists one Type 3 LSA, specifically the LSA with the lower metric when comparing ABR1's and ABR2's LSA for 10.100.0.0.
C. If 10.100.0.0 is a subnet in area 0, the output lists two Type 3 LSAs, one each created by BR1 and ABR2.
D. None, because the Type 3 LSAs would exist only in the ABR's LSDBs.

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