During normal cluster processing in a five-node cluster，one of the nodes unexpectedly crashes. A review of the system dump indicates that a DMS timeout has occurred. The cluster is configured to use disk heartbeats as a Point-to-Point network. What should be done to address the problem with this configuration？（）
A、 More disk should be added to the disk heartbeat network，allowing more paths for heartbeats.
B、 An RS232 network is required to supply a more robust non-IP network when disk heartbeating is implemented.
C、 The network tunable parameters should be changed to allow more missed heartbeats since the disks may be heavily used.
D、 An error notification method is required to determine the action to take in response to a failure of the disk heartbeat.
煤矿采掘工作面遇到何种情况时必须进行探放水工作？
不固定定活两便分为存单式和（）式。
维生素B1缺乏引起心力衰竭的主要机制
A.兴奋收缩偶联障碍
B.心肌能量储存障碍
C.心肌能量生成障碍
D.心肌能量利用障碍
E.心肌收缩蛋白大量破坏
根据《中华人民共和国税收征管法》规定，税务机关违反规定擅自改变税收征收管理范围和税款入库预算级次的，责令限期改正，对直接负责的主管人呐和其他直接责任人员依法给予（）的行政处分。
A、降级或撤职
B、警告或记过
C、党内严重警告或开除党籍
D、开除党籍或开除公职
(三级)中国邮政代理代办的代理放号（注册）业务有代理移动电话放号、_____、寻呼放号、代理互联网注册等。