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【单选题】
Joe is happy about being on a bowling team that bowls once a week. He also enjoys playing basketball twice a month. During the summer, he tries to play baseball on weekends. Joe really does enjoy all sports activities. He goes swimming as often as he can. Whenever he can't participate directly, he loves watching a football game or a golf or tennis match. The paragraph could be entitled .A.
Joe, A lazy-bones
B.
Joe, A Sports Fan
C.
Joe, A Hard-working Student
D.
Joe, A Clever Boy
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【单选题】低压隔离开关与低压断路器串联使用时,停电时的操作顺序是
A.
先断开断路器,后拉开隔离开关
B.
先拉开隔离开关,后断开断路器
C.
任意顺序
D.
同时断(拉)开断路器和隔离开关
【简答题】隔离开关与断路器串联使用时,停电的操作顺序是____。
【单选题】隔离开关与断路器串联使用时，停电的操作顺序是（）。
A.
先拉开隔离开关，后断开断路器
B.
先断开断路器，再拉开隔离开关
C.
同时断（拉）开断路器和隔离开关
D.
任意顺序