题目内容

A new wearable device can let other people ______________. The device is a wristband. It is called a Moodbeam and is made by a UK company with the same name. The wristband was designed by the company and a healthcare provider. The company wanted to make a__________________ to help doctors and medical staff. The healthcare provider wanted its workers to be able to monitor their mood. Wearers of the device can check their mood by __________________. Information on their mood will be _______________. Employers and managers can also see the data stored in the cloud on a dashboard. This can let them know how workers and teams are feeling and coping at work.The original idea for the Moodbeam wristband came from a worried mother. She wanted to know how her daughter was feeling when she wasn't with her. The company website says: "Moodbeam is ____________________that whilst how we feel is so important ______________, it's hard to ______, tough to talk about and often invisible....Moodbeam was created with the ambition to ____________________, by making it easier to understand and talk about how we feel." It added the device: "Allows for better understanding of how we feel, _____________________with those we care about and helps us lead happier lives."

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消除方向阻抗继电器电压死区的措施有( )。

A. 记忆回路
B. 90°接线
C. 引入第三相电压C

具有相同的整定值的全阻抗继电器、方向阻抗继电器、偏移阻抗继电器,受系统振荡影响最大的是( )。

A. 全阻抗继电器
B. 方向阻抗继电器
C. 偏移阻抗继电器
D. 一样大

阻抗继电器的精确工作电流( )。

A. 大些好
B. 小些好
C. 对阻抗继电器的工作没有影响
D. 一样好

电力系统发生振荡时,当振荡周期小于该距离保护动作整定时限时,则该段距离保护不会误动作。

A. 对
B. 错

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