I always chose to grow sunflowers but I can't anymore, "said Dominguez, adding that he was forced to switch to less-profitable sorghum because the birds do not feed on it."
并且还提到，他不得不改种利润较少的高粱，因为鸟类不以它为食。
2
Alarm, feed valve or pump starter switch actuates just before the burner switch cuts the firing.
警报器，进水阀或泵启动装置开关在燃烧器关闭燃烧之前启动。
3
However, SF-BER and SD-BER feed into the automatic protection switching (APS) machine, and can lead to a protection switch (if you have configured APS).