【多选题】有或无继电器是一种只按电气量是否在其工作范围内或者为零时而动作的电气继电器,包括 等。
【单选题】听力原文:M: How are you, Jane? W: Fine, apart from my back. M: What's the matter? W: It's killing me. What is the matter with Jane?
B.
She is in the danger of being killed.
C.
Something is wrong with her backside.
【单选题】单元体变形后的形状如图中虚线所示,对应三个图A点的切应变分别为
【单选题】听力原文:M: How are you, Sally? W: Fine, apart from my back. M: What’s the matter? W: It’s killing me. What is the matter with Sally?
B.
She is in the danger of being killed.
C.
Something was wrong with her backside.
【判断题】种公牛多汁饲料和粗饲料不可过量,长期喂量过多,会使种公牛消化器官容积增大,形成“草腹”而影响种用效能。
【多选题】电流互感器的配置原则包括()
A.
所有支路均应按测量及继电保护要求装设电流互感器;
B.
保护用电流互感器装设地点应按尽量消除主保护装置的死区设置;
C.
为防止互感器套管闪络造成母线故障,其互感器通常布置在断路器的出线或变压器侧;
D.
为减轻内部故障对发电机损伤,励磁调节用电流互感器应布置在发电机定子出线侧;
【单选题】— _____________? — I have a sore back. [ ]
【单选题】He asked me _____ with me. [ ]