SDH帧结构中的信息净负荷指的是可真正用于电信业务的（）。
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工亡事故发生后，由（）负责牵头善后处置，集团安监部、工会、人力资源部、财务部等相关部门配合。
A. 事故责任部门
B. 工亡人员部门
C. 集团公司
D. 运管中心
When tuning Automatic PGA Memory Management， which of the following views will provide the information specified？（）
A. The V$PGA_TARGET_ADVICE view shows the predicted cache hit-ratio improvement if you increase PGA_AGGREGATE_TARGET
B. The V$PGA_TARGET_ADVICE view shows how the V$SQL_WORKAREA histogram will change if you change the value of PGA_AGGREGATE_TARGET
C. The V$PGA_TARGET_ADVICE_HISTOGRAM view shows how the V$SQL_WORKAREA_HISTOGRAM will change if you switch between Manual and Automatic PGA Memory Management
D. The V$PGA_TARGET_ADVICE view shows how performance will improve for the different work areas if you switch from Manual to Automatic PGA Memory Management
小脑机能丧失的显著特征是（）
A. 舞蹈样动作
B. 柔软性麻痹
C. 意向性震颤
D. 静止性震颤
E. 巴宾斯基征阳性
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