少油断路器在运行时要注意观察油标，防止因油量的不足使电弧无法正常熄灭而导致的油箱（ ）事故的产生！
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少油断路器的绝缘油只起灭弧作用而无绝缘功能，在通电状态下油箱外壳是带电的。
A. 对
B. 错
少油断路器的导电回路为：上接线端子→静触头→导电杆（动触头）→中间滚动触头→下接线端子。
A. 对
B. 错
下面哪些属于少油断路器的特点（ ）。
A. 结构简单
B. 易于制造
C. 价格便宜
D. 用油量少
What did the researchers recently find out about mice and rats in an experiment?
A. Exercising mice and rats liked to learn new skills.
B. Exercising mice and rats remembered new skills better.
C. Mice and rats without exercise disliked learning new skills.
D. Mice and rats without exercise remembered new skills better.
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