题目内容

启动按钮松开后,接触器线圈通过自身辅助常开触点仍能保持通电状态的额现象叫。

查看答案
更多问题

热继电器主要对电机进行保护。

The passage discusses the Freshman 15. It represents the amount of __________that a freshman gains during his/her first year of college.

If the Freshman 15 is true, this means that freshmen gain 15 pounds on average due to changes in their ____________ and _________.

Thrown into a demanding environment, students may have difficulty __________ the stress, and then they may turn to ________ even when they are not hungry. When people eat to reduce stress, it is called ________ ________.

答案查题题库