A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.
A. increasing the righting moment
B. decreasing the vessel's displacement
C. increasing the reserve buoyancy
D. shifting the CG（center of gravity）off center
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垂体瘤临床表现有两种，一为___________，二是___________。具体治疗措施有______________。
电压互感器低压侧装设熔断器，是为了当电压互感器（）时，保证互感器不受损坏。
A. 过流和低压电路发生短路
B. 开路
C. 短路
D. 过流
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